It seems increasingly unlikely that it'll be Choo. I still don't think Hamilton will be ready, recent hot streak aside.
I would like them to find the Choo of 2014 if one is out there. My guy to look at would be Colby Rasmus. Toronto wasn't anything great this year, and Rasmus is only under contract for one more year. Even if Toronto feels like they can contend, I feel like a player under a one year contract could be had for the right offer, if you can convince a team on the fringe like Toronto you can still help their roster out even without him.