Although Navyfield do not use great 3D graphic but it can still add some nice touch to its current isometric graphic by having somemore details to the tiny warships. Some examples are;

a. Having smoke coming out of the chimney(not just BB) when the ships start moving.
b. Have tiny waving national naval flags onboard of the ships.
c. Have part of the ships burst into flame as its DP get lower.
d. Have better or a couple more random sinking animations.
e. Have animated waves around the ships as it cut through the ocean.
f. Increase the current size of the ships by x1 with better details.(like the one in the ad on this website)

These are just some of my suggestions, which i think will increase the player's ownership for their hard earn warships.