Make the mastery system like in league of legends, global agenda and many other games. You can change masteries before game or smth. For example dmg masteries for gunner, driving masteries for pilot, repair for engineer. There is level up system in the game, but we get nothing for leveling up. With mastery system you can get like 2 points per lvl, cap at 16 points for example at level 8.
Some ships in the game totally useless like Galleon or Squid, Galleon can be easily kited from back. Squid has no HP and bad gun location. Make ships more classified, like add abilities for every ship, as example for Galeon +25% dmg reduction for 5 seconds, for Squid +25% movements speed for 5 seconds etc.
I dont say about ranked elo system, clans and anything other, but it will be awesome to have.
Make the game more interest, allow the players more customize options for their playstyle.
I found t his game very awesome and intrest for myself, my friend like it too. But realease date was in October of 2012, player base really low. We check the game last week it was like 300 players in game, now we have 2.2k after steam sale, that is awesome. I know the chance you add this features is really low, but i hope you can imrove the game somehow. The great example is Robocraft, i was playing since early alpha, there was like 300 players or less, but now they have stable 10k+.
Improve the game by little things add more content like maps ships, balance the game, then more people buy game, then more money, then bigger development team, then improve of engine and anything. Its just my thoughts.
I only ask for one- improve the game, it is really awesome, i love it so much. Playing it only 3 days. Im so sorry for my bad english, hope developers wont ignore us, we all want improvements!