Report the map for not having Anti BaseCamp area!... the server admins should not have to draw imaginary lines on the map............ if the map allows you to go there, go there. If server admins dont like it, they are very welcomed to email or PM us on the forum and ask us to instigate (is that a word? it felt right) a combat area that protects the zone.
Secondly if a mapper wants a protected arty in a mainbase, he has 4000 different statics to choose from to block the view from snipers or riflemen. Same goes here: if there is an open view to him (like on Goodwood) IMO just shoot that arty guy! after all, he has his entourage of spotters and shooters that should cover him (right flippy?) and Im sure no one wants to play with some sort of holy protective aura around him, where's the thrill in that?? Arty is awesome if handled correctly, but ofcourse there must be countermeasures to it. Otherwise you remove the fun for the arty guy himself.
Just report these gameplay issues, server admins arent online all the time, they dont share the same views and it all bounces back to us, the creators of the maps, to make sure it is clear what you are "allowed" and not to do. dont blame the player, blame the game.