Just popped into my head while riding today. Minefields, barbed wire, and tank traps could add an interesting dynamic as far as cheaply defending against ground units. I was thinking possibly making infantry (or a new unit) capable of placing mines, barbed wire, and tank traps. Possibly make them capable of sweeping for mines, or maybe that could be left up to a tank.
What do you vets of GT think about something like that sometime in the future?

I like this Idea, but I wonder how this will change the Rules of the game

The idea was discussed recently on another board
http://gt.toomuchstupid.com/board/t_t464#m7

No conclusion though. And Johnny has been pretty busy lately.