I tried to avoid including stuff that's in High Tech. Yes, it does make for some apparent glaring omissions.
Even when I was in the M1(IP) days were numbered and all of the original M1 were gone. Ten years later, weren't none because the IP is just a rebarrel away from being an M1A1 (and the ammo storage changes). Many of them were.
The Giraffe is an iconic item from the original game to me. I know it was considered because I've actually touched the Abrams TTB!
http://warfaretech.blogspot.com/2015...-unmanned.html
I agonized on dropping the T-90, and ultimately did so because the Russians were a LOT farther behind than we thought they were in 1985 or even 1995.