"You were a Ranger in a past life. You occasionally find small animals in your backpack. ...................."
I would also like ranger to get a range of passive pets just like Avatar ED thingy (sure its useless but at least gives flavour). Unlike ED version these 'small animals' or pets pop up at random and hang around for say 5 minutes at a time. Each of these pets provide a small buff.
Heck I would be happy for those pets to be the Avatar ED ones already programmed.
Make them available after say ranger level 12 or something.
It's more a flavour thing that won't break the game.