some may have approached him... who knows. i've never spoken to robin or know what he's like, but it seems he has a lot of pride in his products - who wouldn't. if money isn't an issue, which it most likely isn't, i would put money on the fact that he'll plan to be buried with the plans to his designs... lol.
but even if you could get your hands on designs for a few of the more popular parts that are more rare... high impact arms for sure, VBS, and racerX...maybe even the lightning or razerback... you'd most likely have a lot of orders. you could do a prototype of each to sell pre-orders. then again, the expense of buying designs and contracting a very high quality machine shop to execute those designs won't guarantee the pre-orders. and if there weren't enough orders to sustain the additional cost, you'd be out a lot of money.
from a buyer/market perspective, people may also be leery to buy a 'second generation' product. robin and/or sam inspected every part after the polishing and before it was sold. sam has even said he test fits all the driveshafts. it could turn out like the book collecting world: the first edition, first printings of rare books are much, much more valuable than 2nd editions... even though physically they're the same product.
