So if you haven't tried it already, Blizzard has an open Beta for EVeryone and everyone should try it. Its until monday soo time is limited! Anw for the first time ever I tried making a hardcore character, it doesn't really change anything in the game... except one thing. If you die, its permanent. Although I always thought this was stupid and imagined it would result in a massive waste of time if you died after reaching capped level... I have to say that I changed my mind... the psychological pressure of KNOWing you will die forever... is just so heart wrenching... I was so careful it was ridiculous... whenever i took a hit... my heart rate would increase to a really high level :P. Now, i'm thinking I should make most of chars hardcore in the real game... it just seems like the best experience... I can imagine myself now... cursing a boss in 10 years for killing my hero... that's what experiences are made for.
The change in character from my end was ridiculous, I usually talk on skype, eat, watch south park... all while playing games... but now if someone walked into my room I would log out and play another char, same thing with skype, or lunch time.