I don't know the origin, but one of my favorite quotes is "imagine how much could be achieved if no one cared who got credit". Of course, that only works in Utopia, but still a nice thought about ego and creativity.
I forsee engine problems, and probably quest breakage, but I want to try introducing disguises, both through a rogue ability and an Illusion spell. I remember the first time I played ToB, and the guards in the desert town all had unique armor. I was really excited because I thought I might get to bluff my way into the fortress by having my party don that armor. Alas, it was just meaningless detail.