Someone brought up payload carts backflipping on some ramps, is that something that can be fixed?
Also what about Mann vs. Machine fixes, besides pop files, some map collision, bot pathing causing bots to get stuck there's some broken upgrades (e.g. lvl 3 sentry firing speed), or is it mostly engine upgrades you're looking in to fixing first, which might also include bots and their AI/difficulty levels sigsegv already had a go at improving.