Scrap classes altogether...or make jobs the master classes

[Answa]

if you can get 2-shotted by a mob in an exp pt your in over your head to begin with lol

and if you can get 2-shotted by a mob anyway you wont have time get out a heal + your 200 hp cure wont make a big difference anyway

I never said it was 2 hits. Say the tank has ~3 mobs on him, they AoE sporadically. There's an add on you, additionally. Specific enough now to make my point?

but they could easy just add back in sub jobs to fix that just like they did in ffxi

They're different games. Embrace change and don't beat it till you've tried it.