If the pool hash rate goes up significantly and you use the latest bitcoind (which allows sending payments to multiple recipients at once among other things), then it will probably will be useful. Just my thought on the matter. I haven't looked into what it would take to build a pool. I would have to dabble in solo mining with multiple machines [and one master] to get closer to deciding to do so. However, I think there will be enough pools by then that a new pool won't be useful.
I think a pool with a great website and lots of features while sticking to the 2% rate would be a winner! Maybe I and a couple of buddies should whip something up [nah ... won't happen

].
You don't seem to understand how my pool pays out. There are no payout sends, you get original coins direct from the coinbase.