a tftp team would be a waste.
How so?
To make 3 new character at the end of a saga, that PROBABLY won't appear in the next one, would be kinda sad.
If their story is to continue somehow (just as how the NEST and Orochi saga have characters who are still around), then it could be worthwhile, however. I'd love to see a playable Boton.
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Anywho, I'd love it if the games home port added in a bunch of the "missing" stuff, such as more elaborate time out poses, alternate winposes/winposes after neomax for each character, better taunts for a few characters, A few more EX DMs/Specials/Command normals for characters that could use them, Alt designs/Color palettes for a few more/all characters, some more "special team" ending illustrations, and maybe, just maybe, a new character or 3. (It'd be fantastic if they did a "Fans vote" team, but instead, say, make the favorite character of the UK, US, and Mexico, for example)
My Dream port option would be for each team to have a mini-game made to present their backstory in this saga/the series, much like the neo-geo pocket CapVsSNK had minigames, or for a more recent game, the JP version of Tatsunoko VS Capcom. Make them single stage/screen, score based, leaderboard-friendly throwbacks to Neo-Geo games of old, kinda like the cellphone games SNKP has in Japan, and we'd have a nice way to increase value, pull in new fans, treat old fans, and keep the game played/talked about, even when it's not about the fighting action.
KoF needs to bank on it's personality to solidify itself. Just like Aksys did with BB. So it'd be great to see the UI really character based. Have Iori's band, the Psycho Soldiers, and CYS randomly playing the music on the soundtest screen. Use voice samples for mode selections (Terry screaming "OK!" when you select a mode, Sie screaming for Nikuman's when selecting extras, etc.)
The biggest problem of XII was that it didn't feel like a full product to many people. Compare it to MI, and how successful it was in the states. Look at how much enjoyable extra content those games offered. MI series is probably the best blueprint as to how to make KoF and SNKP into a more well known brand/company.
It'd be great to see another NeoGeo Arcade stage like the one in MI2, for that matter; Every character your fought brought with them a classic theme from various neo-geo games. It'd be great to have something similiar in XIII.