I think it's fine for them to attempt it, because trying it out doesn't hurt. If it don't work out they will just have to go back to the way they are.
Though honestly, I don't think it matters too much anyways. The players seem to self regulate when games fill and start, so just because sign ups are up, doesn't mean they will fill just because they are up, and will have to wait until there is enough players. So self regulating.