For those people who ''whine'' about not wanting to level through the same storyline, get this.
First char was a Juggernaut, at lvl 55 and many months i decided i wanted a Marauder and check this i didnt go whine about a AC change but i lvled a Sentinel.
If they should give a AC class change they should give it for free and for 15 - 30 lvl only, after that choice made simple.