I definitely find that spamming attacks gets rather boring after a while...it was interesting at the start but later on it gets dull. It might be ok if there were more useful weapon skills or skills in general that may or may not use tp to break up the monotony.

For example on my lancer 60% of the time I am using the normal attack, 30% a weapon skill and 10% some sort of buff/debuff. If they made the normal attack auto then that frees up a lot of time to chat or whatever but then without some more skills that fill out the time frame battle will seem a bit more dull. I just will not know what to do with the extra time after a while but I guess that is why the battle system is being re-hauled.