As much as I agree that there should be a more progressive way of taking care of this 'other games' conundrum, anyone willing to GM can find players. Its hard for more obscure systems, but its doable. I run Cortex Classic and no one knows it really, and my games fill up. I hope one day there will be a system in place, but so far the tag system CAN function. It just relies on the GMs who make the game to tag their game properly.