No, it never worked in any MMO. There is always 1-3, usually just one, optimal builds for every class. Doing anything else is doing it wrong.
Nobody can tell you how to play the game, however, they can tell you to spec their way or GTFO of their group/LS/etc.Unless you mail me $50 to cover the original purchase price of my game, and set up so that you pay my monthly fee once they start charging, then you can go shove it if you think your gonna tell me how I am supposed to play.