From what I've seen, a lot of people are not happy about the air nerfs. I'm one of the people who actually liked to have air nerfed, but there's also the counterpart, and it doesn't seem like they got a chance to give their opinion before the changes happened. So maybe we can just settle it with a poll?
The reasons I wanted air to be nerfed, is mostly opinion based. I think air is bad designed mechanically, they are extremely expensive which means they should have a large powerspike, but because of their abillity to stack, they either get destroyed by counters, or are impossible to kill. And the only counter is AoE damage, which limits the actual possible counters to a very few units. In my opinion, the fact that you either have to get a specific merc, double Thors or a lot of elites, is not fun game design. I'm not saying I want air to be removed, but I think air should be useless until we come up with a better design.