I would be extremely surprised to see any loaded keywords in the FFG iteration of L5R. I suspect those will all be on their way out, Naval and Cavalry included.
Pretty much every FFG game has several loaded keywords, or the equivalent. I'd be shocked if they stripped them *all* out of L5R. They certainly need a serious culling, though.
I expect Naval to get the axe, personally. Cavalry probably depends on what the game mechanics actually look like; if it's similar to where it is now, with an assignment phase and such, I'd be a little surprised if it got cut. In fact, I think if it stays, it'll be spread around a little, though unicorn will still have the most.
Actually, I generally expect that keywords that stay will rarely be the primary province of only one clan, nor should they be. I know AEG occasionally threw in ronin or even other clan personalities with keywords mainly associated with one clan, but I expect FFG to make it a bit more frequent (across a similar number of cards, anyway).