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 and protects smaller countries from being farmed. Someone hitting you a few weeks or even a month later because you hit them first is perfectly legit. You hit them when you were ready, why can't they hit you back when they're ready?

And like Crest said, retal window is a made up concept by the players, not an official rule of the game.