I think that if they manage to fix that, it would be great and really convenient!

Also, another idea could be like in FFXI, selecting the next enemy of the group that the PC has in its line of sight. That could be nice too and a little more realistic (less "BA-ZAAAAAM!!! You dead! NINJA! You too!" and more "Ok, I have to kill it. Alrite! Now i have to... oh Jesus Christ, where the f**k did it go... Oh, behind me. DIE!").