Exactly, ShB is playing with 123 and heat until next "machinery", that's the whole purpose of all those posts.
It's not exactly better, it's just respecting 2 things out of 3 MCH asked for. A button to overheat and less emphasis on Wildfire. Both went horribly wrong, resulting in Hypercharge spam and Wildfire being one of the worst cooldown in the game, flamethrower being right next to it.
Drill and AA are not exactly gauss, they're GCDs and if they were oGCDs nothing would work anymore and MCH rotation would just become a "Get to 50, spend heat" everytime. No interest in holding 50 heat unless the boss is about to fly away. We need more things to care about when Drill and AA aren't available, needs more things that aren't tied to heat. And a much, much better wildfire or something to replace it.