What a generous offer, but I'll decline because id rather keep my gaming to a minimum, otherwise I would've bought a new card already.
I can still make you that map. 
Ok offers still there!
My 'Testing Ground' map would be whatever giant ass 4v4 scale map looks most like English countryside then clear a big square in the centre and make it flat and planar (for testing).
then fill in some areas for testing:
Option 1) Copy and paste segmented areas a few famous areas from 1v1 maps, Semois/ Arnhem town centre? crossing in the woods bridge. Please include a big blank big ass 'firing range' space, and anything else you'll think would be cool for testing.
Option 2) same as above except if you can't copy past from other maps, just create some quick and easy equivalents of the above.
I'd absolutely love it if you could create me the above would use it on all my videos. I start production of them next Monday in my week off from work
Let me know if you change your mind on the GPU offers still there.