OK, I didn't read this entire thread, but here's my take:
Drum and Bugle Corps IS NOT BAND!
There are plenty of outlets for you if you want to march in a band. There are comparatively few outlets for you march in a drum and bugle corps.
I've heard good bands, good college bands. They're entertaining - but they aren't D&BC.
D&BC shouldn't be changed into yet another type of band just to satisfy woodwind players. You know what? Lots of musicians before you learned to play brass so they could march. They didn't expect us to change the very essence of the activity to accommodate them!
D&BC has used brass instruments since before you were born. It is not our concern that you are 19 and can't play a brass horn - you put yourself into that position.
So, you might not have enough time to get good enough to march a Div 1 corps - too bad. Think about the thousands of life-long brass musicians who never had the opportunity to march Div 1. I know - let's get rid of the age-limit! I'll be able to march Div 1 next summer!
I know the tone of this posting is a little harsh - please don't take this as a personal attack. But think about the points I've raised. When you propose changing the very foundation of an activity, you change the activity into something else.
I should add that these opinions are my own, and do not necessarily represent the position of my corps.