hm its a nice idea. I downloaded it and checked the animations and so on.
And all i have to say is, sry dude, but this is not detailed enough... It has any chains, any wheels, there are any particles for the attack animations and so on. And any window stuff, that tanks use to have =)
Nevertheless i like the morph anim, but its not very special.
So over all it needs work, its a good idea, and it could be a very fine model =D
Greets