Agree. Or upgrade the "Embassy" for unlock type of ships available.

Please, change the HA system. In the battle against defense ships, I think a side-by-side encounter would be better. Currently there may be a DD or CL against a CV or SS, and the combat becomes lethargic; they spin in circles indefinitely!

Give a function to the Research Center. How to use BP to be able to make a last improvement (add a technological tree) to the old and dear "booty" boats.