m4/3 to Nikon G adapter with built in ND's

I've been waiting for such a solution to become available since I first started using m4/3 camera's. I'm done waiting for someone else to do it. I used to be a welder and machinist before I took a career change and went to film school. I still have a lot of friends in the industry that could either let me use there machining equipment or might be willing to help me depending on interest.

Before I go down this road, I'd like to ask you all for some help and input.

1. How much would you be willing to spend? This will determine if there is a market and if it's feasible.
2. Should I go for a slide in and out type filter system (cheaper, and can be available quicker), or a filter wheel type of system (more expensive, and will take longer to become available)?

If there seems to be a lot of interest, I might try to start a Kickstarter campaign.

I really like this idea, and I'd definitely buy one with a filter wheel mechanism. You could make this for pretty much any camera with a short flange mount (MFT, NEX, X, EF-M, etc.) to adapt to lenses that are more commonly used (PL, EF, F). it might be interesting to explore something like this as an insert into the camera as well like the Moire filters for DSLRs. Excited to see what you come up with - keep us posted!