Not entirely true. Positron was completely against full tailor customisation because he was afraid of people running around as Mastermind pimp and hoes. (Yes, seriously that exact example.) There was talk of maybe letting MMs "customise" their pets in a power customisation way, picking different skins for their pets instead of the default, but that never came to any fruition and was probably way way low on their priority list.
Personally, I would love to play both a Pimp Mastery and a Hoe Summoning MM.
