Your work became a lot clearer to me when I had a look at more of your videos on Youtube. I assume you want to make a nice 3D version of Flank-that-Tank.
I think it would be cool especially if you use cool camera angles from outside the tank and not just first person from inside the tank.
Personally I'm not really into games anymore but I used (Amiga years) to like the following ideas:
- Split screen option, play with a friend on the same TV screen.
- One player commands multiple tanks/units to add more real time strategy. For example maximum 4 units, you drive them individually to where you want to attack the opponent (one at the time) and then you roll out your attack. For example while you command unit 3 the other units have a like A.I. to defend or attack incoming dangers. A bit like simplistic Command and conquer.
Also I would like to suggest to add some explanation voice to your videos to clarify.