I think being able to see the current state of the enemy should be removed. Although removing crew count would make it a guessing game on wither or not to board.
I think we should still be able to see the state of friendlies just for the purpose of assisting sinking ships if that ever gets added in.
Also, I think the UI we have now is fine. I like the UI being transparent and blended in with the game itself. I don't like having the UI with colours, for example NA's old UI where it had a bunch of bright red colours etc mixed in with the UI, which turned me off the game pesonally.