Did they redo the HP formula for some classes?

I think they might've retroactively added the HP/MP from your HP/MP passives from 1st/2nd job (depends on class). I'm talking about how the new MP Up thing gives 120 MP per level instead of gaining MP at (flat rate + INTx0.1). My I/L gained 24k MP after Red so yeah (68k-92k)... It was level 200 at this point, so it would make sense too (120x200 = 24000).

I am going to miss getting like 500+ MP per level though