I think Troq's super should always do at least 2, but I do see where you're coming from with the 1, 2, 3 damage on growth potion. I could definitely see that as an actual thing, especially making super way worse on wakeup, but way stronger when you have momentum.
Troq's Growth potion could be like Urien's v skill where he gets armor, and maybe his hitbox increases. Maybe it's like Hakan's oil, and you always want to have it on you and it lasts for a bit, opposed to a single special. Getting hit makes it hard for you to keep drinking, but you do it on knockdowns, and maybe more than one drink. (just remembered Q taunts)
Also what if his anti air was like Ganondorf, where at proximity it's a grab for 2, but far away it's a hit for 1? I suppose that's like Grave's super. Maybe that's too good. Tomahawk/Up Hawk does separate him/them from Gief/Rook because of that antiair, so who knows.
I do love me some Heat Knuckle/Atomic Collider, but maybe it'd be too hard if that was his only command grab. Or maybe he'd be really good in other ways, like if he had a condor dive/dive grab. Now my brain is whirring with ideas and I'm excited.