MCH buffs!

[Fannah]

But instead the went the route of making the existing mechanics obsolete without even bothering to get rid of them entirely. [...] except now we're going to make it so you never want to use those abilities the way you're supposed to." I can't help but say...huh?

No, Cooldown is here to temporize in order to use your wildfire/overheat rotation at the right time, so it still has its use. Unlike what you seem to think, Cooldown manages heat, believe it or not, it does --> You don't want to stop attacking because it would start your overheat just when a boss is about to become invincible/untargetable, or that a dps check is about to come. Cooldown temporizes --> Cooldown fills its purpose. And it also has this fun powerful side of spamming it under Overheat (the weapon overheat, you cooldown a lot to make it ok, in a way, it looks it's ok RP wise).

To talk about the Hot Shot, it makes you have +40 minimum potency by using Split Shot instead of Hot shot, and if it procs, it's even better, so it can end to be a nice potency buff as Hot Shot direct potency is too weak.

The Gauss Barrel 2 sec CD is great for lower levels (so also in daily roulettes) who would like to manage heat a bit while they don't have Barrel Stabilizer and/or Cooldown. Even just the feeling of putting it on or off the way you want is nice, especially when you want to just train on a dummy and restart at 0 heat.