A very good comedian said it all in one line.
" Theres not a pill you can take, a class you can goto. Stupid is forever. "
FATES aren't ruining the game. Its a system specifically designed around multi classing on one character, so no more quests.
Dungeons aren't going to teach people anything. At all. If you want people to learn something, have them do the stupid guildheists, those actually INSTRUCT you on how to play cooperatively and teaches mechanics.
P.S. Its kind of a double standard. People complaining that fates are ruining the game and not teaching people dungeons. When probably a majority of the people complaining about this are probably people that immediately ditch wp/ak etc when they see someone not well geared. :P