We all know that Battleships pretty much have no real uses in "competitive" meta. They are too slow for our play style and generally get shot to shit in Cruiser Clash.
I do think however that they can be employed in certain Game modes to great effect
Break through Attacker (Sneaky Blitzkrieg)

Despoiler makes for a great decoy in these mission and if you give it stealth also makes for a pretty nasty suprise when you are killing 2 defence platforms at once. On Break through Missions i deploy 1 stealth Despoiler and 3 stealth Hellbringers. Have the Despoiler deploy on one side. The hellbringer team on the opposite side. People will mostly ignore the lonely blip (Despoiler) in the far corner of the map thinking "thats just there to distract me". If this happens you are still good to go and move in. If they dart for your Despoiler just keep going and destroy atleast 1 Defense platform and keep up a decent fight while your Hellbringers one shot the rest of the platforms. In this strategy the Despoiler is pretty expandable. Move in on both sides and wax those platforms. Bombers make short work of them while you fly by. Most enemies wont be able to react fast enough and generally dont really cover platforms that well either. 4 Bomber squads = Dead platform 9 times out of 10. Once everything is moped up proceed to the boarder and get out.
Convoy Attacker:
Pretty much same thing as in break through. deploy on opposite sides and use your Despoiler and hellbringers. ATM Transport defenders will always get rekt by carrier fleets. Despoiler Normally wont die on this mission because the transports will be dead by then if you make the right guesses on where the transports are located and with which formation they are going with. (eyeball the slow blips those will be the transports).
Assasination/ Intel: Defender.
You may Deploy the Despoiler on this mission but do not make it the Admiral Ship. Use a Hell bringer or Slaughter for that. It will suprise the enemy and he will either A try to kill it while your flag ship slips away, or B try to ignore it but still get attacked by it and in most cases the Despoiler can still keep up. Hide it in a gas cloud or astroid field and use it to ambush the enemy as you fly by with your hell bringer flag ship.
Planetary Assault: Defender
Despoiler doesn't do too bad on this mission You can deploy it here as well.
Space Station Assault: Defender
Havnt Played this game mode in a minute but again it works fairly well if your the defender.