The problem with TNE is that even if you do switch it out for tab target it still doesn't cycle nor does it even target the enemy you're on correctly it's not proximity of your character but rather how the screen is facing a certain way. You must have your screen a certain way as to always have your cycle going through each mob the way you're facing rather than how the games tab target is set up.

As for PvP it's a nightmare to tab target to get to a kill target friends that I play with we have to focus target each other, call out a target, and then focus it down. It's really tedious to do instead of how tab target should normally react, no one wants to tab 102090239 times to get that white mage that's already back in enemy lines because you couldn't target him/her.