I personally would not play diablo 3. But games like Tera do interest me.

I came back after a roughly 4 month or so, the UI did indeed improve a bit making it easier to play but the battle system still seems very unresponsive (I play a conjurer). Whenever I cast spells it doesn't seem to react immediately according to what I cast or when I wanna switch quickly between spells and normal range atk, it just won't react for me. Maybe I just suck at fighting or it just simply react very slow.

However, in general, it hasn't make me wanna come back to the game very much other than looking at pretty graphics and perhaps the instance quest which makes it no different than any typical rpg.