well... for this tank nothing Special, i mean, the model is "special" compared to other mods.
i was drawing a space ship very inspired on BattleCruiser from starcraft, in that one i was thinking a lot of crazy ideas, like flying like your helicopter (vertical take off) and when landed it works like a factorissimo that the player can "enter" the ship and load some chests of ammunition that automated turrets from outside shoots... and other crazy stuff. In the end, concluded thats too big for me.
Decided to make a tank, way more simple, drawn the tank, look for tutorial to make it alive and learned thats still not simple enough for me...
i will be happy with a normal tank mod, the only thing i can give to you in exchange for the work, its draw something you want, nothing organic shape, i use solidworks.