I think this frame has something similar to what you are talking about for lugged drop outs.
These have been available for quite some time, however I think they are just really ugly. May require less of the builder's time, but still ugly.
The way a framebuilder melds the drops to the frame has always been one of my favorite details on a frame. The plug in drops just don't do it for me.
Nick Zatezalo Atlanta,Ga
>From: Don Wilson <email@example.com>
>Sent: May 6, 2006 10:06 AM
>To: Classic Rendezvous <firstname.lastname@example.org>
>Subject: [CR]Why are dropouts joined by tongue in groove, not lugged?
>I've always wondered why drop outs were attached
>tongue in groove rather than by a lug (i.e., a stay
>inserted into a cylindrical end on a dropout). A lug
>would seem a stronger joint and, could likely be
>engineered and machined to be quite light. Fabrication
>seems technologically feasible. Assembly seems no more
>difficult, perhaps even easier. A lugged bike might
>look more unified (and beautiful) in appearance with
>matching lugs at the frame ends and frame joints,
>rather than tongue in groove at the frame ends and
>lugs at the frame joints? Perhaps the KOF frame
>builders could weigh in here and explain why tongue in
>groove is preferred. I assume it must be superior for
>some reason, or it would not be done, but I'd like to
>Los Olivos, CA
>D.C. Wilson email@example.com
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