I understand the point funcom wanted to make with this one hour 5% zone....allowing guilds of the same side to set a dispute in arms in case of both would desagree on land control...but...
Ethically no guild will attack the same side as they would be pointed out by their community and in the wars history i have no remembering of a guild of the same side volontarely attacking another guild. They always did it unintentially because of helping another guild defending their base against oponents in the 5% time frame.
So not only this time frame is useless because of common moral agreements between guilds of the same side, but it works contrarely as intended, as it hinders other guilds to help defend a base in this time frame, as those who help are being "punished" for helping allies, as they get their own bases attackable for very long hours...
So what s the point with keeping this rule, if it does not work as intended...or may be i m wrong and the intention was to make the last hour the hardest time to defend a base...and the prefered time for attacking a base.