If I could go back four years and change the clicks on the character creation screen, Scryll would probably be an orc. He wouldn't have that damned annoying slouch, he could wear actual shoes, and I wouldn't have trained myself to ignore a "useless" racial ability . And in this scenario, I wouldn't miss the two years, then three years, now four years of increasing trollish characterization which makes it impossible for me to reroll him. I have had the occasional thought about Blizzard's newest scheme to apply a vacuum pump to our wallets, and use the pay-to-customize option to change Scryll to a girl, which would at least get rid of the posture problem.
I don't have concerns about the classes I play. If there's any class I want to play, I can just roll one up. I've got a rogue, priest, druid, and warlock who will see end-game, I've got a shaman who could see end-game almost as fast as a new deathknight, if I wanted to play a hunter I could easily just level up my twink hunter, and I have an Alliance mage and hunter in their 30s who I could do the same with. The only two classes I'd have to level from 0 to 80 now are paladin and warrior. I've tried both numerous times and always abandoned them by 20-21, they just weren't my sort of class.