FFT is a weird case. If I were the king of the DL I'd mandate form chains for the FFT Zodiac bosses - e.g. Dyce->Adramelk, Wiegraf->Velius, Elmdor->Zalera. That said that is more complex and the team fights are messy and ugh. The problem with the Zodiacs, while memorable, the FFT AI doesn't randomly show off its moveset, it picks the "best" move, and some of the moves that are bad in-game (and thus correctly to the AI - it shouldn't be punished for not using them) are broke'd in the DL, e.g. the Zodiac's status game rather than just nuking you with damage. So, under the old site mindset where people are expected to vote based off memory of the game rather than necessarily peering at stat topics, probably don't use ANY of the zodiac demon bosses, alas. Stick with PC Elmdor & Wiegraf I suppose.
Anyway the old ranking set was fine but boot Zalbag & frown upon hacked-in PC Alma with equipment changing.
Awakening... well, it's pretty moot with CKDL rules, but if it had come out in 2009, I'd probably arrange the tiers of rankability like so depending on perceived playership:
Core plotty characters - auto-includes if the game is ranked at all, no huge interp issues. If you've played the game you know why.
Chrom, Avatar, Lissa, Frederick, Lucina, Say'ri, Tiki, Gangrel
(Tiki is technically optional, and Lucina's stats shift around a little by mother, but these are both minor issues IMHO.)
Distinctive / early / fan favorite characters - Characters to rank if we didn't do a full cast ranking but had enough votership to include some extra interesting duelers, whether they be well liked, unique class options, etc.
Sully, Virion, Stahl, Vaike, Miriel, Sumia, Lon'qu, Maribelle - Shepherds core, all players likely used them at least a little in the early-going.
Cordelia, Tharja, Henry, Anna - Well-liked / distinctive skillsets in the DL / very usable in-game
Aversa - Notable boss, although very swingy by older DL interps (give her average speed / movement and she's a High Heavy, give her Last Strike and she's uh Low Middle.)
Walhart - I don't particularly care but I suppose he is a plotty boss, and he's nice enough to move & have support.
Rank almost everyone
Basilio, Flavia - Plotty but potentially not much used in-game.
Olivia - A FE Dancer in the DL? Novel.
Validar - Plotty but kinda yawn, his battle doesn't entirely translate either.
Everyone else
Ricken, Panne, Gaius, Gregor, Nowi, Libra, Cherche - All quite rankable & interesting and have fans, but if any PCs would be dropped, I guess it'd be these.
Cervantes - The power of his mustache cannot be denied.
DNR
Donnel, non-Lucina kids, final boss.
Had there been sufficient support in 2009, I'd actually go all the way to the "Everyone else" tier, personally. (If we assumed that people didn't nominate characters TOO heavily on the basis of "not in for X seasons, therefore must nominate," which could cause a large ranking to lead to Awakening DL. Not that Awakening DL would be that bad a fate IMHO.)