What they want and what they'll get are very different animals. They're not going to get anything approaching Miller in return for Hanley, not when the rest of MLB knows they have the Marlins over a barrel and not when Hanley's production was horrid last year.
I'd offer them Cox and Martinez for him. I like Jenkins a ton and don't think we have enough positional talent in the system to trade Tavares. I don't care what anyone says - Cox is Matt Carpenter with worse plate discipline and higher draft status - he's not a starter at the next level and we need to deal him before his value completely craters. I think Martinez's delivery has him in the bullpen one of these days.
If you can't draw a crowd, draw dicks on the wall.