Couldn't the ammo be given to the medic to balance him? Sounds like a good tradeoff to me.
Oh, and Blitz, what's the deal with this plateau here, the one I'm standing on in this screenshot, which for convenience's sake I shall call Kayak Dog Plateau:

Seriously, there's a bridge leading to it from "Plateau a", and you can get there from the northernmost CP, but there's no real reason to be there and I don't think I've ever seen anyone there, either. Sure, it lets you get to the bridge leading to "plateau a" enabling flank/sneak attacks or whatever, but there's no real reason to try that either as you're sure to be spotted on your way over the bridge. Pretty much the only reason to be up there seems to be to enable you to scout out/suppress the Upper Flag.
If you altered the map slightly and made the spire across the chasm a plateau higher than the Upper Flag, accessible from the CP, and bridged the gap from Kayak Dog Plateau, there would not only be another reason to be there, and another way to attack the Upper Flag, and the ability for the Upper Flag Garrison (which I shall for convenience's sake not call Kayak Dog Garrison) to go up there for a high ground advantage which shouldn't make the map too unbalanced.
"One of the bitches actually gave birth while she was attacking, and her puppies joined in on the carnage."
--the awesomeness that is Boatmurdered.