Rate my pokemon diamond team plz?

your team is very great and awesome. You seem to know what nature is suitable for what pokemon. Really impressive. All your pokemon are very powerful, especially garchomp and tyranitar. I suggest avalanche or dragon claw to fight dragons and many other types. Since you said you 1 to get rid of a pokemon, then i suggest dusknoir. Its not a weak pokemon but its just too slow and and is the weakest among all your pokemon. You might 1 to get an electric type pokemon like raikou or zapdos. they are not ubers so don't worry. Preferred nature for raikou would be modest and mild for zapdos. Its undeniable that your team is really tough. 9/10. Hope you like my suggestions.=)