I liked this idea because i low man stuff a lot. So it's not even a mob turning or player moving issue.

When i first leveled thief with an exp ally it sucked though. I hate missing SA and i missed way too much. Today i can counter that by soloing my own mob, or disengaging sooner to attack the next mob. This is an ability that atmas provided, although i could still disengage back then, and actually did, but well, people whined ("assist the MA!").

So yeah, i would enjoy very much such a change one way or another.

I like ideas that change sa/ta damage too. If they kept the position restriction but provided a significant boost to their damage, i would not be against at all. According to SE thieves specialize in covert actions and aim for the perfect opportunity to attack from behind. This perfect oportunity should, of course, translate in good damage. With this in mind, for me it's unreasonable that thieves are not ws epeen kings.

Still, sa/ta today doesn't provide a big boost to our damage, and removing restrictions won't change it much. I'll even dare say that a thief that doesn't sa/ta isn't so bad of a thief. Before abyssea and lvs75+ i would laugh at such thing.