Demi,
I don't think you will find anyone here to disagree with what you just stated. The ISR for example, is all about such an evolution in DT training.
Most of the posts though revolved around your thread title: Self preservation or MMA and then the content of your initial post. So in other words, not about the need and cause to assist in LE training and approaches but many available means to that end.
-Luis
www.straightblastgym.com
www.onedragon.com
www.isrmatrix.org
A splintered thread of thought indeed.
Demi