Gents, could use some help here. 6th year of a keeper league, and keepers will be cut to 4 at the end of this year. 3 year cap on keepers, but other than that, no strings attached. I have Pujols, Utley, Cabrera, Greinke and Haren as potential keepers, so I don't know what I'd do with Strasburg, but I also don't want to sell him short in a keeper league.
I give: Strasburg Ichiro Snider
I get: Ubaldo Choo Hunter Span
Roster is below: C: Suzuki 1b: Pujols 2b: Utley 3b: Young ss: Rollins Of: Bay Of: Ichiro Of: Reimold UT: M. Cabrera BN: Heyward BN: C. Davis BN: T. Snider
SP: Greinke SP: Haren RP: Hoffman RP: Fuentes P: Capps P: Thornton P: B. Anderson BN: S. Baker BN: G. Floyd BN: E. Santana
Great deal for you, so long as you still are able to keep all your guys you currently have (assuming none have been kept 3 years already). Playing for this year, Ubaldo is more valuable than Strasburg, Choo is almost just as valuable as a declining Ichiro and Hunter AND Span are a big upgrade over Snider. Hunter/Span would be nice to have too in case Reimold doesn't pan out this year. I say do it.
In your format, I would move strasburg. He certainly won't have the same value as your current keepers at the end of year and the pieces being offered in return will contribute much more then what you are giving up this year.
When do the contracts on your current keepers expire?
Because there is no sliding compensation scale for your league(auction $, draft pick, etc.), Strasburg really isn't in the same breath as your other keepers and I wouldnt hesitate to deal him.
This deal adds nice depth to your team, but at least one of these guys is going to sit on your bench. I also strongly disagree with the first poster that Choo is almost as valuable as a declining Ichiro. Dude hit .350 last year and still had respectable numbers in other categories. Steals and Homers are everywhere this year, but batting average is hard to come by.
I'd see if you can do a smaller variation of this deal where you get rid of Strasburg plus a throw in and get Choo/Ubaldo in return.
Also, if Cabrera or Pujols are expiring soon, you could get a bounty for one of those guys.