I dunno what I'd want tbh. Perhaps Severa and Inigo, since they would be from Awakening but technically Fates too. So it could be a "Time Travelers" expansion pack. Inigo can be an axe user since he can promote to a Hero, but his Strong I could be a dance like his mama's. Then of course, Adult Tiki. She'd technically be a Time Traveler too, giving another user of the dragon stone and a different type of Tiki to use.
Adult Tiki wouldn't gain additional stats during Awakening like Young Tiki and her way of playing would be very different. She'd have a unique human form moveset, but same moveset as Young Tiki during her Awakening. Combo I = same, except Adult Tiki's is less effective (1 Special Bar = 10% Awakening Guage)
Movement would still be 6, stats would be...
HP: 999
Str: 75
Mag: 118
Skl: 141
Spd: 85
Luk: 110
Def: 123
Res: 123
Skill: Boosts all stats by +1, INCLUDING movement if Awakening Gauge if full. So really the draw is the slightly faster movement.
Care to elaborate what those flaws were? Just curious.