The only buff I would ask for,
if I even were to ask for one which I'm not, to Shotgun right now is that her Low Shotgun Blast be a little faster. That way it would be a solid whiff punisher from midscreen and would make it easier to land after, say, a B2~BF2. I don't feel like I have enough experience with Full Auto nor High Tech to even think about mentioning anything about them but learning them is on my list of to dos
@JustinXavier21 was telling me that High Tech is her best variation the other day though, I guess we'll find out if that's true or not soon enough.