Guild Wars 2

Huge moving thing with mounted cannons on the sides that are fixed in place and deal cone damage. Catapults on top. It can carry 10-15 people at one time with 150% move speed to transport troops and will be amazing for seigeing but will be clumsy. The driver will be able to shoot ballista bolts and increase movement speed for a short amount of time.

So the charr tanks?

Lets get some Airships too. We can fly over the Hills or bay and then do some drops right into the middle of all those defenders. See how much their Arrow Carts help them then.

If they do airships I would prefer it to be a map unto itself that is all air and you get into one of several crafts that serve as’ classes’ like in the wintersday snowball fight. A slightly modified underwater combat system (as in some classes are always moving forward) could work well to create an aerial combat map.

Toss in several airships to deserve as capture objectives/mobile keeps and you have a fun at up. Especially if they constsntly move forward and only steer if a player turns it or it hits the edges of the map and a safety autopilot forces the airship to turn back into the interior of the map. Imagine the fun of giant airship to airship fights to try and cripple the enemy ship and board it.

Oh and little to no land in the map and no supply. Just have things take time with the possibility that up to x can channel on it to speed up building or repairing.