Please friends, give some feedback to Sigma as I did. They promise to share my comments with their headquarters.
I appreciated their ideas to employ big foveon and sharp 28 mm lens in a compact camera, but have asked them to:
brighten the lens to f 1,8 or at least f 2,8
give nice viewfinder
give some, at least simple X contact, hotshoe on DP1.
And I attached my dream compact camera picture