[Arryn]

Assume, for the sake of argument, that a mage/SC/pretender has both Astral Shield and Fire Shield up at the same time, and is paralyzed. This "attacker" is still killing defenders despite being immobile on the field. It would be grossly unfair to auto-kill it just because it cannot move (yet). There are many, many spell combos that could be in effect that would still be killing defenders while the attacker just "sits there doing nothing".

Those in favor of auto-kill are taking a far too simplistic approach to a problem that is much more complex than it may at first appear.