My very first post here at NG.Com was asking about how to procure a dev kit, I even bugged Playmore about it never getting so much as a "Fuck Off" from them... and thus GOOD LUCK! You'd have an easier time morphing into a dragon and farting your way to Mars. I had a group of talanted ppl about a year ago (3 programmers, 4 artists, 1 sound guy, and me scripting stuff) that wanted to do something within this fabric and see about limited NGH runs, the pricing on something like that etcetera... but it all fell through and now I continue working with some others to see about doing an SCD for PC-Engine or even a Mega Drive game, but getting the carts for that would be harder than making (or having them made) carts for the NEO, since obviously the NEO is still around and the Mega isn't. You're best bet would be to try to find someone in the retro community. Bug some blokes over at Classicgaming.com or something. It's always great to see others with a passion for these great systems though. Glad I'm not alone.
PEACE OUT.