[Snake]

(+1)
Don't forget the part where Mayelia behaves like Heavy Armor. They can still get BK passives wearing any kind of armor so here's it. 'Immune' to physical damage, poison AND able to regenerate 15% of 100% by just uh... wasting their FP! Yay--?

I'm agreeing with the Suggestion One, because an 'innocent armor' planned to be situational can pretty much be exploited by this race only.
(I mean, really, before Dullahan got the 'new stuff', they were ATLEAST vulnerable to physical hits for Mayelia being a Light Armor, and not mixing with BK passives.)

That's not even called 'self-harm' with so many benefits they gain for burning out FP, double points if they're spamming that Priest move that heals like 25% their max HP. S'up, free reset button?

I'd only agree with such feature if it was implemented a Slime race. THEY can regenerate like microbes in mating season, heavy suits of armor should deny damage, not regenerate like Majin Buu under sugar rush.