only this time I do have full control of all my character data.
As in.... so you can cheat and edit it? Otherwise... who cares?
What an odd place to draw the line. Any online competitive game houses the player character data on their servers. Welcome to the internets.
4 of 5 classes cleared through inferno without AH use? So you spent... like 200-300 hours per class? Sounds like you enjoyed this game quite a bit.
PvP and other online play is simply an extension of vanity. People want to compare their character to other players characters to see how they "measure up". There is exactly none of that in TL2 because you can hack and edit anything int he game you want.