Let me ask a question to ppl who play CON/THM would you ever turn off AOE cure? It makes it VERY hard to balance spells when the same spell can cure 1 person for 600hp or cure 8ppl for 600hp. Nuke 1 mob for 300dmg or nuke 20 mobs for 300dmg, its significantly simpler to have different version of the spells and remove the aoe button. Also this plays into the job uniqiness factor where rather then having certain jobs with access to the aoe versions and even a future battle class mage access to specific aoe versions but not the current blanket style of either the job can AOE everything or nothing. right now its not as apparent of the problems but with a few more mage classes or worse a mixed battle/mage you are going to see the limitations are worse then it would appear now.