Evil is so not descriptive...
What I call Evil could be what you call Good...
Is killing bad?... You say YES
Tiger kills you to feed her young... Good for the Tiger but Evil to you...
You kill a cow to feed yourself... The cow thinks you Evil you think Your doing Good...
In game Guild kills intruders = same problem (sure you can argue that they can be killed b/c they attked you first but killing is killing just b/c it is justified doesn't NOT make the act itself Good).
Guilds saying no killing but want to expand their territory = you will have to kill soo... being killed =Evil/Killing=Good.
Only pointing out that people who say "I will RP or Align Good" they will also kill(Evil Act) when it comes down to you respawning or the other guy...
Societies/Guilds/Nations in and out of game will rationalize they are doing Good by killing the other guy...
My reason to mention this is b/c it will undoubtedly be hard for GW to draw the line in the sand and set up a system that will be fair so please be patient with them ;p