Raptors get: KevMart or Courtney Lee, Scola and Dragic
I see none of them as good long-term pieces for a rebuilding team like the Raptors. Scola is solid but he's also 31 and tied up in a contract for a few more years. There is no point in getting a player like him right now. The time to get Kevin Martin was a few years ago to pair him up with Bosh. Again, no point in doing it right now.
It's a move that maybe makes the Raptors a little better right now but does nothing if you want to build a contender for the long-run. This deal is too reliant on other deals that would have to occur afterwards and I don't think that's an assumption any team wants to make.