I followed the development of this with interest because, as a technoid of sorts, I found it cool - particularly with the ability to maintain a fully analog signal path. With that said, I'm not really surprised of the limited acceptance of it - the bottom line is it's just not necessary.
A few years ago, I decided to wire up a strat (ok, it was an old US Peavey Falcon - a pretty decent strat clone) to give every combination of phase, series/parallel, pickups on/off. It was a fun project, a wiring mess and not the most user friendly thing to use. And you know what, it was totally overkill. I mean, ok it may be fun to show how I can run the neck/bridge in parallel, in series with an out of phase middle - but that doesn't mean it's all that musically useful or different enough from many of the other combos to be worth having as a distinct setting.
I think it's the same with the game changer. I don't think anybody really needs much more than 3 or 4 good sounds to work with and dial in. As a lot, i don't think musicians like to have to struggle to understand their instruments - too much complexity and choices can just get in the way and hinder creativity rather than help it. Analysis paralysis can set in. Like Gibson with the Firebird X from a few years back, that didn't really seem to hit the mark either.
Regardless, I do think it's a cool idea from a technology perspective and I give them credit for giving it a go - it is pretty unique - I'm sure it was a non-trivial R&D investment. But overall as suggested earlier, an answer to a question that not many were asking...