Pets or no pets, an autoloot option would be very welcome imo.
Pets are a fine way to do it if it's not too difficult on the Devs, as long as Item Mall pets are just skins over the F2P pets.
You can wear the original wings underneath the item mall wings. If you want the movement speed, you get wings that have movement speed. If you want your wings to look different, then get the item mall costumes.
I think 4 would be less of an issue if the time required to loot other people's items wasn't so long. If someone doesn't loot something in like 10-30 seconds they probably don't want it. It's really annoying to see so much loot on the floor everywhere I go, but if anyone tries to clean it up...most of it is on cooldown still.