I get the feeling the changes were proposed almost only on substrate player feedback. they got their wish regarding cheap eco, macro and whatever they may think about it with the new patch.
Medic is very slow and along with it whole phc economy as for the rank you are delusional if you think air was the sole reason for high rank.
You may have the feeling that air was strong because at top tier you would get heavy air harass. Hades was supposed to be the only way to do damage to the economy early but it's not working because of a bug and even so the resources have too much hp.
This patch did not raise the bar in skill, it just pulled the good players to the mediocre lvl play where you always have one path for win by brawling in a protracted lan war in which sub always has the upper hand in both land and air.
I see the current patch as a way to allow a boring repetitive gameplay over and over again. There is no diversity appart from the seldom sentry rush. both sentry and engineer nerfed to the ground because of low ss player that do not have a clue how to macro.