A better idea against fragmentation would be to carefully decide whether to approve new forums for FT. The quality control should be made at this point. Numbers should not be the sole criteria to judge viability. If a forum has the potential for informing a segment of the FT community, we should be willing to consider it.
I am not a big fan of trying to decide which forums are underperforming and should be closed. Some topics are more specific in nature, but they deserve a place where people can share information without getting buried in a larger forum. I am glad to see additional forums for Asian countries and smaller loyalty programs (i.e. Choice Hotels) even though I do not participate in them.