I am leveling a druid alt at the moment and could not help but notice this rambling however i have seen Vanguarders and many others camp low levels. heck long before Kronos released people camped low levels so i don't think you can blame a guild your you walking within a contested zone and 2 alts being on follow to a lvl 60 being killed off by another lvl 60 in that same fight ?...
Hmmm it does not really sound like something specific to a guild but rather something horde vs alliance have done for more than a decade... Blackrock mountain is contested and you will rarely see an alliance & horde acting friendly, if two raids meet in there its a fight as neither can afford being friendly and suddenly ambushed by the other raid. ZG is pretty much the same its an island ppl don't wish to spend much time upon as well... enemy faction players will come across and kill ya if you stay there that is the reason all portal asap same goes for felwood...
I am starting to get the feeling some people do not get what "Contested" or "PvP Server" means ? If your guilds have a grudge against eachother then speak in a civilized manner instead of complaining that you saw someone who was part of that guild kill your alt once upon a time or you where killed in a contested area...
At least come up with some valid reasons and not some basic stuff like faction vs faction which blizzard has encouraged for over a decade...
Give us a pve server and I will gladly play there.