Nah, there are 2 SOD editions. That's enough, for the time being. Give the sod a break, I say!
It's probably the single most widely hated aspect of 3 and 4. It was THE issue when 4 was being brainstormed around here. Alot of 4 was built around half-baked ideas to get rid of the SOD without losing stacking, like suicide catapults/collateral damage together with the removal of ranged bombard. Fail!
I don't really blame Soren too much, though. It was rushed out the door, and they still managed to do alot with it. There are a few things I loathe - like the suicide catapult idea - but there's so much to like, too, especially all patched up with all expansions. And they certainly supported the fans - they really didn't need to release the 3.19 patch at that late date, few other game companies would.
But it did get off to a rocky start and even with all the improvements made over its life, there are a few really ugly bits that could never be excised without revamping the game. Namely SODs (and the supposed "fix", suicide catapults).