Yes, I can see that problem too, but I wasn't able to solve it due to time and canvas size constraints.

I can see the scissors allright but the perspective is awkward. The right blade of the scissor tank lands in front of the rock when it looks like that blade should hide behind the rock or go right through it?

I definitely don't agree, but it's already in the gallery so I'll give you the benefit of the doubt on this one. =/

Well, it looks like one (has the blades, the pivot, the general shape)... The hovertank look is just superficial.

I'm not exactly sure how that would be considered a pair of scissors, aside from just being called "s'cissor'...