Playing as s mage as well i had a lot of difficulties - and more dead bodies close to me - then before.
Playing on the controller like i did in ffxi and so far in ffxiv, which worked very good, now is a big problem.

There should be an option for party and all - but you shoudl be able to bind the keys for it, so its just like you want it. Party would be mobs and members (who needs friendly... didnt find a situation where you really need that)

Let everyone customize their targetting system and how many different options they'd like to have. So nobody can complain and is happy - at least for the time being.