So you want PvP with less decision making? There’s actually a dynamic to downed state, your suggestion will make downed state the following:
-Mash 1 if you have allies near you
-2 if someone is picking you up
-3 if respawn is coming up soon.
Yeah because what we do now is super deep
-mash 1 until they come to finish you
-interrupt their stomp
-cast your 3rd spell when it is up
-revive yourself if no enemies are around