Re: players you keep from the existing roster
I'd love an Ed Davis/Marc Gasol frontcourt going forward. Gasol isn't a defensive monster but not bad there either. I love the way he plays on offense though. He won't get many touches with Gay and Randolph on that team but he moves the ball well and just knows where to be. Just a smart player. I think Ed Davis has some big defensive potential in him too. It would be a good balanced frontcourt.
When it comes to scenarios that are somewhat plausible, that's my dream.