So my understanding on Prestige (feel free to correct me if I’m wrong) is to emphasize a certain style of game play for each commander while sacrificing another part; basically, further specialization.
Swann’s 2nd and 3rd prestiges certainly fill that criteria. They might need some number tweaks, but they fulfill that criteria.
I honestly don’t know what the Heavy Weapons Specialist prestige gameplay is supposed to emphasize. Like, is it a more passive Swann player? It’s probably the biggest thing that has bugged me about this, is that it’s not really helping any play style. If I were to venture a guess, it would be to assist your ally that pushes as you take time building up your army, by sacrificing later game enemy wave clears.
I know a lot of people (including myself) have suggested fixes to how Swann’s drill works with lock-on timing and increased splash radius. One other thing I would also add to that is maybe do something with his Warbots, like decreased cooldown, or summon more warbots, or they also do splash damage. Personally, I think just decreased cooldown would be enough. It’s not super powerful, but it allows for you to assist your ally with stuns and tanking, while giving you time to build up an army.