While I never played AC, I did get to watch friends play it a lot in our LAN store, and IIRC you could AFK and sell buffs and shit? I kept wondering why in the everliving fuck more games didn't give you more offline/AFK options. Like instead of having to wait for people to MGB or beg for SOW, people could just AFK/offline in certain places and have prices set (for spells, crafting, etc) so that people could come by at any time and buy whatever.
I know that there would be issues but that system sounded intriguing.