No, I want the pool to be 100% stable. It's plenty big enough to work now, adding tons of little miners who don't have 50MH each just causes a lot of server traffic.
As the owner of a brick-and-mortar company that does work for businesses, as opposed to individuals, and mostly decent-sized corporations, there is something to this big miner vs small miner thing.
If I were to start a pool, honestly, I'd probably design it to attract larger miners (10MH+) and discourage smaller ones. Providing support to a small number of large customers is SO much easier and more lucrative than a ton of small ones.
Could do it with fees that vary based on average MH/s... Problem is people who have the MH/s, however, are also renting it out, thus they may have 25MH/s for a few hours, only to drop to 4 when most of their stuff is rented. Keeping things stable for 100-200 "big" users is a lot easier than designing a DB that doesn't bog down when there are thousands of simultaneous requests.