Quote from hmyzEven if they decide to count dead chars experience towards your paragon level, if they announce it now - i'm pretty sure there will be people that will use all the time they have till release to level & suicide naked HC characters giving them those extra 100lvl worth of experience. This way they'll have a huge advantage at the expansion start.
I don't think that's how it will work. Playing with any character will increase the XP towards paragon levels for the account. The question is: should the XP that one character have gathered be removed from the account when it dies?
There will be no benefits to dying with your character unless you can't create more characters and have to kill one off that's on plvl 100 (perhaps that's what you meant).