True, but I am singularly unlikely ever to get to GGL and I use F&F for the very few regulars for whom I book, and Travel Companions for more transient relationships.
I'm also very unlikely to need more than 5 F&F - two is probably enough actually so I think I'm good. But this discussion has been interesting.
Were TCs introduced after F&F? I remember when F&F came out but I don't recall when TC appeared.