This idea look sickly good !

Only some point i'm confused with :

1) cast time of 3sec... That's as long as some Blm highest tier spell usually it's 2.5 sec cast
2)so half skill are physical skill... How are we gonna damage since our main stat seems to be mind and int as sub, you need str to do melee action
3) only Fire element ? (Ok kinda earth too) it's my least favorite XD i prefer ice and thunder... > I do understand that you can't put EVERY 6 element in here...

...

Anyway love the style looks very fun to play
Fit right into my way of healing (full time dps and giving out regen when needed)