I posted my $0.02 on the other board. I love my NDS22 receiver with the integral rear sight, but it looks like I'm in the minority.
I kind of like the idea of a billet "non-Ruger" receiver that would accept any rail that would fit on the Ruger receiver. That would be a boon to (DIY or custom) builders, and would allow them to use exactly the rail that the builder (or his customer) wants.
Whichever way you go, good luck! You guys rock.
ETA - Aside from MOA, does anyone else make a "plain" aftermarket receiver?