Everyone is worried about the mp cost, I get that.
But, we don't yet know what the tick cost will be.
We also don't know how much mp we can realistically regain from abilities.
Light strike and other such manual non TP attacks are gone, so don't worry about the additional cost there.
The changes look good, it will all come down to balancing the mechanics of mp cost to mp acquiring.

Personally, i'm looking forward to throwing up some fiery fists and feet (1.21 for the feet part) and seeing what kinda crazy broken damage I can achieve.