In fairness, Mint is very much a spike-and-slump healer. First Aid is trash, Heal gets quickly outdated... granted, Heal gets outdated when she gets Nurse, which is floor 3 and for the duration of the floor is like MT full healing and holy fuck it's hax. Floor 4, it dwindles, but she gets Cure and now can properly ST heal for the rest of the game (she also gets Silence, but who cares about ST silence). And then floor 5 Nurse just kinda sucks and she doesn't get much there (well, Valkyrie is a good MT physical damage boost), and she doesn't get her MT full healing until floor 6. And the revival is floor 7... but I digress. Regardless, the big big deal regarding Mint is really the adequate durability+near-inexhaustible resource pool combo. Lategame, she even gets elemental walling options, which helps some. After accounting for scoring, she's really a much better pick than Ronfar will ever be - I'd choose her over EBC Ronfar even at 0.5 for the sheer resource depth and better team flexibility.