Worst day ever....

That'd be awesome. I had the same exact idea, but I gave up on it because it was too hard to code using just a proxy. I envisioned you would have an entire troop rather than a single pet, though. Basically, you would be the sergeant leading your platoon of misfits into battle, where they would act autonomously, dodging bullets, shooting and using spells, and picking up and autoequipping better loot while trying to stay somewhat close to you. They would also nexus when injured, heal themselves, and either try to get back or idle until you came back to pick them up. There's just something really compelling about having a bunch of weak players whose wellbeing you're wholly responsible for. One gets stranded too far away, surrounded by mobs. You run in screaming, mowing down gods and taking hits to rescue the player before the medusa bombs drop, saving private ryan style.