This is almost exactly what my samurai deck looks like except for a few cards. At least you get that grandmaster is better in threes and shogun is better in twos. You still need marauding captains and more spell monster destruction like smashings and lightning vortex. The samurai don't really have that great of attack power, so I would add in some threatening roars or wabokus instead of sakuretsus. The cybers are not needed in a samurai build. I would replace them with the captains or mother grizzly to get out another samurai(yaichi). You definitely need the smashings and Don't really need the shrinks in here. And instead of an enemy controller, throw in a lightning vortex or brain control. The deck just seems slow to me though. the captains will help, and also throw in a morphing jar for good measure and draw power. hope this helps. r/f any of my decks in sig or depot. peace .Y..

Side both Kamon
+ Spirit Reaper (good stall)
+ Sangan (great searcher)
if you don't like the reaper idea, then add your third Cyber Dragon
- 2 Enemy Controller
+ 2 Smashing Ground/Fissure (need monster removal)