when i first heard of hero classes ages ago, i thought they'd be class specific. So a priest has its own, warlock has its own and so forth. Or one for each talent specialisation. So a DPS paladin becomes a crusader, a holy paladin becomes a holy knight (as apposed to deathknight) etc. If it was like that, then they should take over your current character, not give you the chance to make a new one.