It really doesn\'t matter which MMORPG you use an example:
Do you read the mission set-up that the npc\'s give you? Good for you if you do but does it really alter anything about the quest, how, or even whether, you choose to complete it or what actions you take in completing it?
Nope...other than telling you where it is and what to do, it\'s just words with absolutely no impact on your character. You don\'t have any options about how to complete it or how any options would alter things for your character if there were any. The quests don\'t affect your \"alignment\" at all nor does your alignment figure in selecting which quests to do.
Just as I stated in the PvP wish list thread \"Earning the Right to PvP\", it\'s not enough to say your Evil, Neutral, Chaotic Good or whatever. Alignment has to be developed by the actions and choices your character takes in the game...and the game has to support you having options to choose from, not to mention consequences-bonuses and penalties- for making those choices. Otherwise it\'s entirely meaningless.
The concept that guilds choose an alignment that applies to the members is bass akwards. Players actions should define their alignment and the guild would only be allowed to either select which alignments could be members or leave it open and have it \"calculated\" from aggregating the alignment of all the members.
If your alignment changed from what your guilds was, it should be cause for notification to all players and the guild leader who could set a time limit for the player to return to the proper alignment(s) or they could simply set a menu item that automatic dropped you from the guild. The specific action ought to be something the guild can set on a menu.
Guilds that allowed their members to stray from the initial choices they\'d set would become \"chaotic\" by definition. My thought is that unintentionally chaotic guilds would receive no bonuses while more narrowly defined ones would. This would not preclude someone from intentionally creating a chaotic guild and earning bonuses. But the allowed alignment selection screen ought to preclude too wide a range of alignments being allowed.
Chaotic as a guild alignment choice presumes the adoption of an AD&D-style range of alignment possibilities. If you just go with Good, Evil & Neutral than Chaotic becomes simply the definition of a guild where the membership has strayed from one of these (or two if you want to allow Neutral + Good & Neutral + Evil to be viable alignment choices). Good and Evil would obviously not be a selectable choice!
All that part is relatively easy however. The real question is can PS support most all quests being \"branched\" such that players can make choices that affect their alignment? If not, than saying your Evil or whatever is no more meaningful than saying your the man in the moon.