I think that this is a great chance for Curtis to shine on an international stage, and should help him get up to game speed in time for a red-hot start to the regular season--as long as he can avoid another injury like the broken hand that landed him on the DL to start the season last year.
From a collector perspective, this is great news. I'm already drooling over the idea of WBC Granderson cards, assuming that the ones released by Topps this year were just a taste of things to come!