I am posting this for a friend as he does not have a BL forums account, but has and plays the game often. he wrote these, but simply asked me to post for him.
Well, we already know that Heedicalking made a Razorback with rocket launchers, and a Vindicator. But we need more, and he won't release his for some reason.
Dreadnought This could work in the same way Gravity Cat's Mech playertype works
But, if this would work, when you change your datablock to the Dreadnought (if it's a playertype) it starts with no right arm/hand. You then pickup a Plasma Cannon, Lascannon, Whirlwind, or Assault Cannon item. These items would then add the weapon and arm itself. If this won't work, it could just be a vehicle.
Land Speeder Anti-gravity vehicle, could work the same as a jeep, but floating and the wheels (invisible) are touch the ground.
The second Land Speeder is the Land Speeder Typhoon. It has Whirlwinds on either side, this could be controlled by the pilot of the Land Speeder.
Land Raider Armoured Personnel Carrier with Twin-Linked Heavy Bolters at the front, and two Twin-Linked Lascannon sponsons
Stalker Air Defense vehicle that uses
Icarus Storm Cannon Arrays mounted on a METULL BOCKS (Rhino) chassis
Whirlwind Just your standard METULL BOCKS Whirlwind
Whirlwind Hyperios Whirlwind launchers mounted on a METULL BOCKS
Hunter Anti-Aircraft METUL BOCKS with a
Skyspear Missile Launcher mounted on it
Stormtalon Gunship A one man gunship. This can be controlled with HeightControl Support
Equipped with twin-linked Assault Cannons on the nose, Twin-Linked Heavy Bolters or Twin-Linked Skyhammer Missile Launchers on the hull.
TaurosAll-terrain rapid assault vehicle
Can be equipped with a Flamer, or a Lascannon
BasiliskLarge self-propelled artillery piece, firing a 132mm shells with a range of 15km. Hits targets at 15km in under 19 seconds.

BanebladeSuper-heavy tank.
Armed with a Baneblade cannon. The secondary weapon is a demolisher cannon (which is also what a Vindicator is armed with). Hull-mounted Twin-Linked Heavy Bolters, and two side sponsons each equipped with Twin-Linked Heavy Bolter and Lascannon.
Tallarn SentinelThis could work the same way as the Dreadnought idea
Equipped with a laser
Support SentinelEquipped with a Missile Pod