Why the +/- Enmity stat needs to be abolished

[yukikaze_yanagi]

waist melds hardly give "tons" of hp without double+ melding tier 4 materia (and btw, nobody said it's mandatory melding enmity+ on waist). Personally i got enmity+ and hp on my belt.And equipping both hp and enmity i still manage to reach 4k+ hp on my paladin with food and party bonus

Heavy Darklight Flanchard also provides 12 vit, and 140hp. There are few logical options that surpass the Hp gain there.

what he said...i'm starting to doubt your good will

Bw, let's assume they change the game like you ask: let's say vit now modify hate generated by flash like 10 vit = 1% more hate. What's the benefit, since hate is largely based on damage inflicted ? You can't hold hate only with flash and provoke
Change enmity modifier to str ? Then every dd will generate more enmity, and they'll surpass tank very easily (str it's the main focus of every dd)
Every other stat it's pointless hp-speaking, so they're useless. Then..what will be different as now ?