You mean this is the rule you would favor from a netter's prespective. The whole thing with the retal window argument is you think that everyone should be netting and thus you want a retal window to protect you so you only have to outrun the retal for the time of the window to ensure the land you keep is free no?

Personally I don't think there's anything wrong with GDI at the moment. It does what it's supposed to, protect you from random suiciders. Someone hitting you a few weeks or even a month later because you hit them first is perfectly legit.