Thanks for the replies.
I was trying to get around having to add more toe to the rear, but I will as a last resort. From what I've dug up through searching, it seems like some talk about traction in terms of camber gain instead of roll center and vice versa, and that increasing camber gain would have the opposite effects on traction if talking about that same adjustment in terms of roll center, i.e. raising the lower arm pin position raises the roll center (lowering traction) but it also causes camber to increase throughout suspension travel (raising traction). I'm just wondering if this is something that's dependent on other variables, or if there's any tradeoff in traction involved in changing one adjustment over the other.