but if some lvl 70s decide to gank one place theres always another lvl 70 from the opposite side who will come along and kill him. it adds excitement to the game.
i personally have no problem killing any lvl 70. when a group of 4 horde (lvl 70) decided it was a good idea to raid sentinal hill (and kill my lowbie druid alt). myself and a mate logged our mains (rogue and frost mage) and ganked all 4 of them for about an hour till they realised there was no chance they could take us.
people who go to low areas to get gank lowbies will always end up getting ganked.
so to sum up my ramblings i think it should stay as it is because it adds a bit more excitment to the game.