Would be great if animals telegraphed their aggressive intent before aggroing. Some sort of animation that lets the player know they're about to be attacked - something similar to the 'fight' animation while domesticating animals. Maybe some sort of method, maybe even per animal type, to de-escalate would be cool too. Run from boar, crawl away from moose, stand perfectly still for bear hearth for wolves
This sort of ties in with better animal AI/behavior, but maybe that's a whole other can of worms.
E: add new curio: can of worms