I still would love to see Fowler back. I know that will push Almora down a rung and it may not be the BEST long term move (although I don't think it's necessarily a bad one, either), but Fowler very quickly became one of my favorite Cubs ever and he still brings an awful lot of value to this lineup (and the clubhouse).
As for the bullpen, I definitely want Wood back. He did really well against righties and lefties for a good portion of the year, and was still a good LOOGY once fatigue set in from his heavy workload (plus, with Monty or Z going to the rotation, they could use another southpaw in the pen). I also really would like to see them get one of the big three closers, with a preference for Jansen because of his versatility in October. Chappy is damn good, and if the Cubs were to land him instead of Jansen, I'd hardly complain about it. But Jansen and Miller really changed the way that we look at relievers in the playoffs.
Other than making a run at a closer, the only big move I would expect Theo to make/try to make would be a trade for a controllable arm (Sale is a pipe dream, albeit a fun one; but Archer, Gray, etc. are still possibilities).
Jansen is my number one want, I think he would be a great get and would hurt one of the Cubs main competitors too as an added bonus.