When did UOA become an uber haxx??
It is not a hack, it is a crutch.
It is not something everyone has, so there is an unbalance, SA I think will level the field again.
When you can alternate between targeting self for heals and targeting last target for offense, without having to prep last target again, you are 2 or 3 seconds ahead of your enemy.
On 2D macros, without assist, once you target self to heal, you are last target. Now if you want to cast flamestrike, you have to retarget enemy again somehow, either by clicking on them, or by using "target nearest ______", or cycling through next target previous target.
If you didnt have the opportunity to pull their tag, you may have a very hard time clicking on them. UOA is a huge advantage that not everyone enjoys, kinda like faction gear.