Kelly/Suarez would be an absolute dream. I can't figure out what's wrong with Gallen but part of me thinks it would be like trading for Cole Hamels when he was struggling, so I'd be open to him instead of Kelly.
The only issue is that several teams are interested in upgrading at 3B. Suarez is going to go for more than he should most likely. I mean if you have a hole at 3B and can get a guy who is on pace for 55 HR, 5 WAR, and plays defense adequately, it seems like a dream acquisition.
The other issue is that the Diamondbacks are said to be looking at young pitching and while we have some, position players are definitely more in supply. Would we be willing to give up Horton for 2 rentals? Birdsell?