A well-made RTwP mod.
Romance Remover (TM).
A silly one, but since we've been told there's going to be a lot of (pettable!) dogs: a crazy dog lady NPC who could take care of every dog you meet that needs rescuing, so they can have a happy ever after even if you have... dangerous beasts in your camp. :P
Also these, though I still have some faint hope they'll reconsider:
Increase party size to six.
Keep companions who are not in your active party beyond the end of Act 1.