Aesthetics of style and sound aside, I've often wondered about the logistics of woodwinds on the DCI tour.
As.I understand it, a number of the brasswinds used during the season are sold on to high school outfits at seasons end to recoup the cost of buying them? So they're kept in shape through the season in a way that makes them resellable (aside from those dropped in horn tosses, run over by props, or used for playing tethermello perhaps).
Woodwinds are a different beast, tons more intricate moving parts. As a sax player in high school, the wear and tear on a woodwind instrument was enough that those of us who were serious concert or jazz players had a 'good instrument' and a 'marching instrument.' We MIGHT consider using the good one for state finals, but more often than not, we'd stick with the marching one all the way through the season. And that was high school, with much fewer performances and fewer hours on the field in rehearsal.
The rigors of a DCI tour might destroy resale value and even perhaps require a fair few new instruments by the end of the tour to make sure everything is set for finals. Plus techs to keep those instruments in shape, instruction staff, etc.
That's adding on a good chuck of $$$ to corps budgets, even if they keep the overall MM numbers the same. I could see sideline soloists and solis be more manageable financially or the 'featured musician' like we've seen with strings, but full on woodwind integration would be a financial arms race that could hurt the bottom line for some corps feeling the pressure to keep up with the corps that could perhaps absorb that sort of cost.