It really helps saying movesets also. It would be like if I had listed Gyarados on a team, no one would know what it's running. It could be a Choice Scarf Splash set and just change the whole team. Anyways.
I can see Salamence really posing a threat to the overall team. No solid reliable switch against a Specsmence (Scizor risks getting hit with a FireBlast/Flamethrower, everything else does not want to get hit with a Draco Meteor except maybe Gallade). The overall team construction seems decent in case of Blissey since it doesn't want to get hit with a possible Leech Seed and everything looks very physical oriented. But Cresselia can really give this team a run for it's money. It's fine I suppose, but I don't know what movesets they are running. I could be entirely wrong, or somewhat right.