I have long wanted to add tracked artillery tractors to AoT to be able to tow howitzers to light woods.
Finally I’ve got them — RSO by Plastic Soldier, Comintern by Zebrano (both painted by Alex Pervookhin).
Now we are thinking about unit cards.
So far, the ideas are:
1) Transport type, but moving as a light tank.
2) Movement 2 hexes. That is, they will drive 4 hexes along the road, even with a gun towed, and only 1 hex per turn to light woods.
3) Comintern and RSO can also transport ammunition, with two times less capacity than trucks - 3 ammo per tractor.
4) Unit strength — 3 pieces.
5) Cost - 5 points for an empty one, 8 points if loaded with ammo.