What do the raptors need to do, in order to be a solid contender next season?

First off your missing other key players in Toronto. Second off, Tukoglu, Wright, George, Reggie were acquired in trades not signings. Reggie coming from Philadelphia in exchange for Kapono. Wright, Turkoglu, George coming from the 4-Way trade. DeRozan was a good pick for the Raptors and I think he has the skill to be the next Vince Carter. They also signed Jarrett Jack who is a good point guard and is willing to play backup. He is better than TJ Ford so we have a good guard combination. Getting Rasho back was also a good move. He is a good centre who plays defense and can give you an occasional basket. I also like the fact that they are going to get Delfino back. I really liked watching his game when he was with Toronto a couple of years ago. Another move I think Colangelo should do is make sure he resigns Joey Graham and Pops Mensa-Bonsu. These are two energy guys that can provide a spark off the bench. But I still don't think that they can win the East, let alone the NBA Finals. They need someone who can score in the clutch and finish off games. That is a big problem. Over the past years I've been watching Raptors games and they have like 10-20 point leads in the 3rd/4th quarter and they end up blowing it. Take for example that one game against New Jersey. They had like a 14 point lead with like 3 min left in the 4th and I remember Calderon saying the game was over but then VC did his magic (no pun intended) What I think they could do is trade some of their bench players for a solid all around defender who will rub off on the team and bring a defensive mentality. After all, defense wins championships.