Make the hellfire ring be made transferable to level 1 HC characters and Bind to character. This would give ALOT of players incentive to roll a Hardcore character and do the Uber event in SC. If you die you lose the ring with the rest of you're gear as per normal HC rules. And you would need to farm another one up on SC to start a new HC character.
The hellfire isn't that powerful for a level 60 character unless maybe you rolled a 1 in a million chance of a godly roll. Even then would you risk such a ring on HC?
I know personally this would make me want to roll and try HC more. I did it once and died to rubberbanding(Australia). The ring would make it much more fun to level and reroll if you died.
I really liked leveling form 1-60. This would make you feel so powerful and destructive whilst still living on the edge. Makes replayability alot more exciting to me.
Thanks for reading.