May I propose a new feature?
Every miner should have the right to propose a transaction that will be added to the next block found by bitminter surely. So there is a chance to get a transaction into the chain that is waiting for a confirmation for a while.
Of course there should be limits for carrying out that possibility. Maybe you have to be active part of the pool for a while, one per month max or something like that. But I think such a feature could push the popularity of that pool a bit.