Ian Dury. Poor chap went far too young as well.

Randy Rhoades.

Ian Curtis, what a troubled soul he was.

With Moon and Entwhistle you could have a Who reunion.
With Lennon and Harrison you could have a Beatles reunion.
With Bonnam you could have a Led Zeppelin reunion.

And so on...

If Les Paul was still alive, he'd most likely still have his gig going that he did right up until his death.

If Kurt Cobain was still alive, he'd probably be in prison for shooting several people while be depressed.

craigb

If Kurt Cobain was still alive, he'd probably be in prison for shooting several people while be depressed. 

Well, at least we'd not have Courtney Love to kick around. 

bapu

craigb

If Kurt Cobain was still alive, he'd probably be in prison for shooting several people while be depressed. 

Well, at least we'd not have Courtney Love to kick around. 

People thinkit, Bapu sezit!

Tommy Bolin. I'd be curious to hear what he could have down w/ a few more years. That kid had a touch.

Dimebag Darrell.

And I could still listen to anything new from Gary Moore.

And definitely Stuart Adamson. Another troubled soul if ever there was.

Cliff Burton. 

Imagine And Justice for All, only, WITH bass...

Jimmy Trapp - Another bass player taken too soon (Walter Trout's).
 
Gee, has anyone mentioned Jaco yet?

Uhhhhhhh, Jaco.

But he'd be in a mental ward somewhere, so no difference.