I've long thought that the numbers sounded a little silly once we hit double digits, sequels to numbers and had online and offline games mixed together... and I also think that they might sometimes work against the series. I've said for a while they'd be better off with just subtitles (Like, Final Fantasy: The Zodiac Age is a great name), but the problem I guess is that the series has so much going on, so many spin-offs and side games of very varying quality that the numbers are the only thing that serve to differentiate between the rest of the franchise and the games that really matter.