The best MMO would be classic low fantasy/survival/tradeskill based with only non-hum

[starkind]

So basically

Froglocks
Lizards
VahShir (or kerrans)
Worgen (gnolls)
Snek ppl
Ratonga
Bird ppl or aviaks
Fishppl
Whaleppl
Ulthorks
Othmir
Kodiaks
Maybe a bugg ppl, that is like beettles U could be a ladybug with like a healing ability like paladin LoH but call it Rebirth or something

etc

as playable *species* each playasble species has it's own unique classes and dieties, factions secrets, each could be released in an expansion of 1-50

just my 2cp