Rate my pokemon diamond team plzzzz !!!!!?

You have a all the types of pokemon you need, but they are just not good enough. So to start off, you don't need a Blaziken, you can use it though if you want. You also need a Blissey, high level because its hp is used to save its ***. Then you need a good electric pokemon, like magnezone. Then you need a good dragon pokemon, which you already have, but i recommend Garchomp because it is slightly better in attack and special attack. Then you need a ghost pokemon, the best would be Spiritomb because it is Dark and Ghost, so it has no weaknesses. Then you need a good ice pokemon, such as glaceon, buh lapras is gud enough. Finally you need a teel pokemon and I recommend Metagross because it has goo defense and attack. And thats pretty much it and if you want any pokemon like arceus then message me at ahnch1992@hotmail.com.