I have thought about it and for me I think my preference for classic steel lugged bikes is primariy aesthetics..... the level top tube, classic diamond frame with a classic stem just works, it is balanced, elegant, and functional. Threaded stems are lean/mean and practical in terms of adjustability. Steel just feels right and I know it will last without concerns.
I am not pure C&V on components....I like STI, I have a classic campy friction and cheapo sunrace thumb friction also. I like the look of alloy components.
I have in my mind for a custom (some day after kids college is paid) Kirk frame, classic diamond frame, level top tube straight stays, threaded stem, internal rear brake routing and ultegra di2. The result would be clean, minimal cables and wires, old yet new.
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Life is too short not to ride the best bike you have, as much as you can
(looking for Torpado Super light frame/fork or for Raleigh International frame fork 58cm)