It takes years and years to be great at one, it's impossible to be great at everything.
By well rounded first thing I think is generic "wrestle boxer", but in the end being really above average in one discipline (or using physical advantage to maximum) will make a difference a lot of times (Maia BJJ, Conor counter punching, Silva boxing, Joanna with striking, Cormier with wrestling, Aldo striking etc.)
Stuffing all those takedowns. People don't like to think he's well rounded but he is. 
Jon Jones is all around badass.
Punches, Kicks, Subs, Wrestling, Clinch.
Mighty mouse same deal.
BJTT_AJM - Stuffing all those takedowns. People don't like to think he's well rounded but he is.
His take down defense was great theres no denying. I'm saying his striking is on such another level that even as good as his TDD is hes still lopsided skill wise in striking.
Just like khabib who ironically is one of the only guys I think poses a serious threat to Conor. His striking is actually really good. but his fucking grappling is so unbelievably next level that even his good striking is lopsided in comparison, same with DC.
elcornjr - No you're not wrong but this game seems to do circles. My guess is at some point a really good well rounded fighter will come along and dominate, then everyone will be trying to get well rounded.
kinda circles but iterations
honing down really
not so much Superman but X-Men
Would Mayweather do well in MMA if he learned how to sprawl and throw/defend decent leg kicks?
mada -I think all the people you named as one dimensional are well rounded fighters that happen to be world class at one style. Just because they exceptional at one skill doesn't mean they aren't well rounded.
If you are World Class at one style but competent at the others, then you are not rounded.
To be rounded means an equal level of ability on all the arts. Doesn't mean you have to be World Class at all of them, you could be well rounded and shit, but there deffo has to be a realivetly even distribution of abilities.
taintpuncher -Would Mayweather do well in MMA if he learned how to sprawl and throw/defend decent leg kicks?
His name is Dominic Cruz and yea he does ok
Trend? Death of?
This wasn't well thought out. Always been this way. Look at most of the Eras dominant champs.
Royce, Coleman, Tito, Couture, Liddell, Hughes, A. Silva.
Leave GSP out, and virtually ALL were one dimensional.
GSP could probably still be the champ and he's one of the most well rounded fighters on the roster.
DiscoNfrno - Trend? Death of?
This wasn't well thought out. Always been this way. Look at most of the Eras dominant champs.
Royce, Coleman, Tito, Couture, Liddell, Hughes, A. Silva.
Leave GSP out, and virtually ALL were one dimensional.
How is Anderson Silva one dimensional? He subbed Chael off his back. That's atleast two dimensions.
I don't think so, conner isn't really even that good a striker. He's a bit like a left handed, mini Hendo but without all the skills, tools and tricks that Hendo has.
Look at guys like Stipe, RDA and Rumble; all are weapons on their feet but 'grappler by trade'. And vice versa with guys like Pettis and Machida who have great ground games but are elite strikers.
Well rounded fighters aren't disappearing at all.
JBASS - I don't think so, conner isn't really even that good a striker. He's a bit like a left handed, mini Hendo but without all the skills, tools and tricks that Hendo has.
Look at guys like Stipe, RDA and Rumble; all are weapons on their feet but 'grappler by trade'. And vice versa with guys like Pettis and Machida who have great ground games but are elite strikers.
Well rounded fighters aren't disappearing at all.
Conor feasts on grapplers who've trained striking and think they're hot shit now.
LMAO @ Hendo having better striking than Conor.
JBASS - I don't think so, conner isn't really even that good a striker. He's a bit like a left handed, mini Hendo but without all the skills, tools and tricks that Hendo has.
Look at guys like Stipe, RDA and Rumble; all are weapons on their feet but 'grappler by trade'. And vice versa with guys like Pettis and Machida who have great ground games but are elite strikers.
Well rounded fighters aren't disappearing at all.
And what stand up skills would they be for Hendo? Other than ducking and spamming the overhand right?
You must be trolling.
TzTinkle - Conor is well rounded compared to a fighter of 10 years ago. Same with the others. Look at Weidman vs Romero, Weidman is a top flight wrestler and he was made to look like shit by a world class wrestler. It's better to max out a skill and learn the defensive attributes of the other skill such as sprawl or sub defense.Chris wasnt beaten with wrestling, he was stopped with striking.....
If you take away the threat of Chris' takedowns, he's much more beatable....
I only disagree , sort of.... you are kind of right, but wrong. :)
Someone like Anderson could play the game he did because he did not care if it went to the ground. He has some of the best jiu jitsu defense i have ever seen. This gives him freedom to kick and keep it stand up.
Wonder Boy: Same thing, he is training wrestling and jiu jitsu. but he has a base system of Karate. Only because of his take down defense does he have the freedom to kick. Woodley is the only one to expose that. Woodley is a freak athlete as well.
Maia has to train stand up game... this allows him to not get punched or kicked when he shoots.
Conor, same thing. His takedown defense, jiu jitsu training allows him to be so free with his stand up.
I could go on.... the point is, WE ARE seeing well rounded fighters. So well rounded that they are free to use their BASE SYSTEM.
.
Cross training doesn't have to be used to get good at a discipline. It can be used to exploit holes in a system. Maia isn't going to go out there and punch up Carlos Condition, but his training allows him to be comfortable in dealing with someone who is way ahead in one area. Every fighter at an elite level has a shitload of abilities, but the best are able to focus on the areas where they can be dominant.
"I could go on.... the point is, WE ARE seeing well rounded fighters. So well rounded that they are free to use their BASE SYSTEM."
Agreed. Well-rounded doesn't mean being the best at everything! Of course guys like GSP were poster boys for being more complete at everything. He did have some of the best wrestling though so even for him it still holds true.
Amagov_Couldve_Been_King -You've answered it yourself, there's an extra skill right there. Conner doesn't duck anything at all and just throws his leftJBASS - I don't think so, conner isn't really even that good a striker. He's a bit like a left handed, mini Hendo but without all the skills, tools and tricks that Hendo has.
Look at guys like Stipe, RDA and Rumble; all are weapons on their feet but 'grappler by trade'. And vice versa with guys like Pettis and Machida who have great ground games but are elite strikers.
Well rounded fighters aren't disappearing at all.And what stand up skills would they be for Hendo? Other than ducking and spamming the overhand right?
You must be trolling.