they also did not have all the problems they have now back in 2008-2010...they cant even give correct info on events, or maintain a reliable server...what makes you think they could implement class swap service?
all they need to do is add stone of destiny back to the game, and get rid of pointless dualclasses...players already have enough to grind for their desired class, like grind runestones, buy "forgotten skills" lol, get dyes/tattoos, artifacts, cloaks, circlets etc etc...then they want us to lvl up a dualclass to get more skills/stats ? uhhh where is the fun?