Kaiba's deck? >_>
What's Gadget Soldier and Judge Man for? Not all of the cards in Kaiba's deck are good.
Since you want a dragon-themed deck, try having something which takes advantage of this. Back in the days I used to play a Dark Paladin with a Dragon-themed deck, just so I can special summon a 5000+ attack monster. You don't necessarily have to put Dark Magician, just try taking out a few Blue-Eyes (gasp) and include Buster Blader, and use Versago the Destroyer to fuse. Btw, you have too much tribute monsters.
Here's a list of some of the more unnecessary cards you have, you may consider removing these.
-Chaos Emperor Dragon (Isn't that banned?)
-Gadget Soldier
-Judge Man
-Death Virus Dragon (Don't think it's in WC2008, I used the all cards code and it doesn't show up)
-Mirror Force Dragon (See Above)
-Tyrant Burst Dragon (See Above) (Are you talking about Tyrant Dragon? If so it's still unnecessary, too many tribute monsters)
-Clone Dragon (See above)
-D.D. Dragon (a bit useless, since it's a 5 star monster)
-Paladin of White Dragon, White Dragon Ritual (See Death Virus Dragon, plus ritual monsters are usually worthless)
-Kaiser Glider (See Death Virus Dragon)
-Kaiser Seahorse (IMO it's too overly situational. Beatdown decks should not depend on these kind of situational cards)
Now I'm totally lost about your spell and trap cards, I haven't played YuGiOh since the LV monsters came out in Japan. However try removing situational cards and having cards which apply to all situations.
And one last thing...
WHERE IS JINZO AND MARSHMALON?????
