Regarding the ND filter instead of adjustable aperture, yes you may be right. I remove that requirement from my offer, so it now reads:
- it can shoot in RAW (that I can import into Adobe Lightroom 2.6), prefer DNG
- it provides manual control of shutter speed
- it supports motion detection
- it doesn't crash
In truth I intend to pay up if I can get raw images out! That is my #1 requirement.