The imms seem to be taking two sides of the story here. First they say there's no real benefit to taking time out of regular life to practice your skills, aside from pk skills that make no since during ranking. At the same time, they've put in quite a bit of effort to stop people from doing it. Its obvious that its not going to lag the system just because someone wants to beat up on arials for a few hours. If its not going to make them uber-powerful then I say let them go ahead and do it and let's everybody just shut up about it. Personally when I make a new character I try to pick a different class from the last one. Taking a bit of time outside ranking to practice not only boosts my abilities but is a relatively quick refresher on how particular spells/skills work with each other.