Can we take addon classes in more an easy way?

[Cabalabob]

that only waste the player's time

At implementation that was the point, if the main story was just key events it would have taken all of an hour to beat, they wanted to make sure people weren't reaching level 50 and finished all content on day 1, so they padded it out to buy time to put more content out. Unfortunately it's hard to undo it once it's been done, which is what they hope to bandaid with the jump potions.