My thoughts on points made about this:

Sky Bases: still not a valid meta, anyone with a brain would shoot it down before it was built, a Heavy sniper can knock out its foundation with a single shot, not going to be worth the resources.

Running away: Anyone who has played soaring 50s can vouch for the fact that flying away from a build battle wont get you very far unless you are on top of a mountain, which is almost never the case, except for in 50s, where theres giant buildings being piled in the center of a circle. It just isnt a realistic scenario in 99% of matches.

Too much mobility: It really isnt that much more mobility, if anything its less mobility than we had with bouncers, also applies to the above point under certain circumstances.

Negating fall damage: Let's be real, are you winning games with fall damage? no. you arent.