Yes, it would be awesome.
Although it’s not nowhere near perfect solution as it would be if all new pets automatically target marked enemy, ff you’re playing with a Controller with Big Picture you could autocast Pet Attack (set to lowest 1s frequency) using activators as I described here: [Guide] Autocasting for controller in Big Picture and Grim Internals I checked and I helped you before with changing Hotbar from On Toggle to On Hold with these activators it seems