I should have specified - I was taking about a TR + 3 attacks set and separately about a CM + 3 attack set.I think if you're gonna run TR you should not run CM. If you have another TR setter then you could CM sweep with Hat but if you need Hat to set the TR in the first place I think you're best off running TR and 3 attacks.
Hatterene can sweep with TR support but I think that, especially without Dynamax, Hatterene is less likely to pick up multiple kills efficiently.
Is there anything specific I should be doing about your last point? I'm reading it as an indication that a TR + Life Orb setup should be used to overcome the loss of Dynamax, but that's just my gut reaction.
Is it the case that I would be better off running her exclusively on a TR-centric team?