@knowhow
Just so you know, I'm planning to input the idea that accounts will only have one owner, the one that made the account

This again for security reasons ^^
So whatever your planning on doing, do it quick ^^
In my honest opinion, selling/buying accounts is a no-go :p
(A simple example would be, if ever a btc-address is used on multiple account, both will be locked until further 'research')