Spreaded shots with freeze rounds,cloakand sd is op...But depends on how many shots he fires without recharging..the space between shots(when it fires,the shots will go straight to the enemy with space between),the range (of course that it's small) and how accurate it can be
You should add a campaign(where you win xp and unlock the upgrades --bought witth xp),and the premium ones should be bought in multiplayer with points(you get them after killing enemies and win matches).Also more upgrades,ships,maps,mods,classes.That will make the game more interesting and more attractive.