Well, a corp where everyone are focused multiboxers is a different monster than someone with a main and a salvager alt or a trade alt, etc. Obviously mining is a good thing for multiboxers because more ships = more ore, but at the same time mining is one of the more boring things to do long term in the game. PVP gets a little iffy with mulitboxing because of timing and screen flipping, but Ive known of a bunch of merc types that run around with remote rep alts in alt corps that do fine. Also do you want the corp to just be multiboxers from here or do you want to recruit newbies and give them something to do?

The only dream I've had that I've never got into was to make a drug making corp doing more "illegal" type activities, but thats just an example of some of the lesser known parts of eve other than mine/mission/pvp.