***SUCH a good post, Frost, I decided to steal some of it for my signature!I think pure wing chun, just like any pure Chinese art, is a marketing myth created in the last century when actual hand to hand combat became less of a priority and preserving the art became paramount.
If you look at the history of any art when it was actually being used changes were always made to the art, the pole was added to wing chun, choy lee fut was created by blending several arts together, as was mantis. Lions roar etc.
Back when the arts had to work the practitioners and masters were very practical, they kept what worked and adapted as necessary to survive.
So to answer your question those that care about making their arts work in the 21st century will adapt and change and add what is needed just as their ancestors did (and just as you yourself have done, as Alan Orr’s people have) and those that are more interested in the art for arts sake will continue on the purified path, so not much will change there.
But what will change I feel and where the real revolution will be is with those coming into the martial arts to learn how to defend themselves. I Feel they will not blindly go to any old school and train the way their sifu says they should in the hope that one day they will be able to defend themselves like the masters of the past, but will critically evaluate what they see and compare it to street fights and yes to what they see in the UFC and then act accordingly.
I feel the consumer now is more switched on to what works and what to look out for, I know when I started martial arts about 20 years ago we had nothing to compare our instructors to and blindly took on faith their claims that fights do not go to the ground, that takedowns are easy to stop, that all the different moves in the forms can be used effectively and its your fault for not working them hard enough if you can’t pull them off etc.
Basically we had to take there word when they said what they did would help us defend ourselves, but this is not the case anymore and I feel this is the real historical change that we will see.