The list of changes looks great, the battlefield will now be filled with players running around fiends positioning properly for their WS's and combos. I like it how they gave every class something to do asides from simple auto-attack + WS. GLA(PLD) sounds that it will be awesome with that 50% HP heal xD.

@Kiote: You seem to be misunderstanding the term "Fundamental play style". On paper at least, the fundamental play style of all classes has been retained. GLA will still be tank, MRD, PGL and LNC will still deal damage in their own way (very creatively I might add) Arc still shows that will deal damage but turning more into support class like was specified, CON still seems to be the healer class and THM still seems to be the DD mage.