You know what would actually be pretty cool? Take some of the concepts Hasbro tried with the Micromaster bases and expand upon them at a modern deluxe's scale. Even better, you could make them standardized modules that locked together to recreate an Autobot City playset like in the 1986 movie. Heck, might have to try that myself when my casting supplies arrive. Barring that, what you have is pretty neat, though I don't know if I'd divert money from more figures for more than one.
I got to thinking about it, and there's a Pat-Catans around here that has a lot of stuff that I could use for my base. They even have a pretty good selection of Testors model paints. I would have gotten the Flat Olive Drab by now, but, I honestly have nothing to do with it yet, lol.
