I don't quite know what to suggest to properly fix them, but something needs to be done.
I realize that the reason they were changed to the way they are is because of the bad head-hits for most weapons. The way they have it now would have been a fine temporary change while they looked over...
Take the old gz radius, make guards not able to be called outside that radius. Make them unable to aggro anyone outside of that radius, even with ranged attacks from inside.
Then people can go to towns for pvp again with small groups and not get fucked by guards.
Thank you for read time.