Putting your woodwinds at the top of the formation only means one thing... you want your band to sound like a drum and bugle corps instead of a BAND! If you don't want to hear the woodwinds, be respectful enough to just tell them that you don't need them and they should stay home and not waste their time. BUT... if you REALLY want to sound like a band, you do what ever it takes to create a balanced sound!!!!!!!! If that means the woodwinds are in front, so be it!
My college band, Long Beach State (CA), back in the 1970's was awesome. We always sat in the stands in concert formation. Flutes/piccolos, clarinets, Saxes, french horns (yep, no mellophones), drums, either trumpets or trombones/baritones (depending which was the more powerful), and finally sousaphones at the top.
Listen to the woodwinds in this recording of
Malaguena from 1975. That's what woodwinds can do for a marching band if you let them.