Last time I played with a enforced 10' sureender rule, large multi-person houses were exempt from the rule and players were warned "do not go in the houses if you dont want to be shot close up". This scared a lot of newer players. It has gotten much better when the speed limit was set to the equivalent of 20' (275 fps) instead.
As far as my opinion on surrenders, I would be happy if a rule came into use that the bunkering player may call "you're out" or "checkmate" while having the other player dead-to-rights and the bunkered player given 1 second of grace period to call out before being shot. The rule obviously applies to suprise bunkerings and is optional on the part of the attacker.