I was always fan of 1 player = 1 character
I never understood how its fair when 1 person can solo a raid content just cause he is box-master
I do like bots however, they not much diffirent from official SOE mercenaries.
Idealy i would propose that they would have to be purchased, and you cannot have more than 1 one stored at any time.
So you would start with 1 free bot of your choice at lev 1, and at any time you want to summon a diffirent bot you have to pay 1k*bot level, and your previous bot will be deleted.