For toronto I think they improve significantly defensively. JS Giguere is not washed up. He had a rough time of it last season losing his father and has struggled this season. I think his struggles are as much due to a lack of regular playing time. Goaltenders are creatures of habbit and need to see game speed shots on a regular basis to stay sharp. The change of scenary for Giguere will do wonders. Phaneuf is a nice addition to Toronto's back end which is quite solid to begin with. Kaberle, Komisarek, Beauchamin Phaneuff, and Schenn? thats pretty damn good. And with the leafs lake of forward depth after shipping out 4 forwards, they will likely struggle to score goals. What that means: take advantage of unders on Toronto. Especially of the books keep pasting them with 6s like they have been.
I don't see much of any impact for Anaheim. Losing Giguere won't hurt, Toskala will never play and who knows with Blake. Although Blake is playing for a new contract somewhere which could be a motivator.
I have no idea whether all the forwards Calgary acquired will gel. only time will tell on that one.