I'd be for a overhaul and looking into things like the UO bonding mechanic in MO. IF the AI, especially pets, followed the game rules and limitations that a player has to. And once Beast mastery and beast influence are in, too.
This means, Attacks that are easier telegraphed and give ample enough time to block. Right now its a lot better than it used to be, with animals spamming out unblockable attacks at a rapid rate. Its better but not quite there yet. If pets could just like bandits feint attack, or otherwise do attacks that try to trick someone not paying attention to get a hit in or at least try, that'd be good too. The key here is that even an absolutely maxed pet with a max skilled tamer should still rely on the actual tamer doing things like micro on pet movement, attacks, retreat, attack AND do things on his own. The pet is an extension of the pet user, not an I WIN button.
What else? STAMINA, in some cases MANA(Ranged attacks from hunter lizards etc could have that as a resource). All AI, including pets should work exactly like players do. With walking, jogging and sprinting. Sprinting costing stamina, attacks costing stamina, blocking costing stamina and these being limiting factors to the AI's mobility, damage output and defensive capability.
Animals can't block, lots of animals should have "pet attacks" that are simply mobility related. Wolf doing a quick dash to try and avoid swings directed at it etc, things like that. Boars used to do a very MEH charge thing(Picks a target, charges towards it but doesnt steer so its easily sidestepped), but that was a sign of something cool to come, hope they build on things like that. Really haven't seen a boar do it recently, but i'm sure it still does.
Once AI and in turn pets have actual limitations to them that doesnt make them tireless W+M1 spamming murder machines, then they should look into actually making the life for people using them easier and maybe looking into something like a bonding mechanic as seen in UO.
But I wouldn't even bother with a discussion about it at this point further than this TBH, SV has other priorities right now and when they start giving AI some more work then, that discussion will be appropriately timed.