Some things I noticed with the bushi. The "Chigiriki" destroyers AI appears to not want to engage any enemies? It maintains a pretty considerable distance in my game, at all times, for some reason. This is a problem because the range of the weapons in their class of ships is pretty small, that goes for some of the medium slot weaponry as well. I found the rail cannons range to be a tad short for a medium slot beam, taking hull mods to help this is pretty much mandatory. The other destroyer, "tachi", seems to engage enemies fine but is also cautious and remains at a certain range which makes it difficult for their weapons to fire, in my experience.
Edit: Theres a more pressing matter actually, the burn speeds need to be adjusted. A max burn of 3 for capital ships is kind of ridiculous, and with the new update centered around burn speeds its pretty impossible to catch anything.
Edit again: just saw the update. The 6 burn for the carriers/bombers is a little too much, in my opinion. I understand Bushi fighters are extremely good, but all this really does is make it so players just bring another faster carrier, the majority of players just won't want to deal with that 6 burn speed. right now from my experience 9 is typically stray frigate fleets, 8 is destroyer fleets, and 7 is around cruisers/capital ships/everything else. Even with hull mods you're looking at a slow 7 maximum burn, when I probably don't just speak for myself when I say I mod all my capitals to bring them to at least an 8 maximum burn because at 7 burn you're not catching anything, and at 6 you would struggle to even catch the heaviest of npc fleets. Pretty much the only time you would use Bushi carriers is when an npc is stupid enough to fight you and come to you instead, when you could have the chase potential as well with a different carrier.