You were making a decent point until you said the current unis are "great" and "look awesome."
They're awful. Nothing to do with change - they are just bad unis. The blue jerseys are passable, but the whites with the different-color blues and shoulder yoke are putrid.
I still don't understand why Buffalo teams don't get it, uniform-wise. Capitalistic, unabashed money-grabbing reasons aside, you don't have to make a dramatic overhaul of the uniforms every few years. Just update them, tweak them a little here and there, and stay with a classic look.