I know what you mean about level and square. My Pearson 631 (12 years old now) has one, then I got the Bob Jackson world tour, that certainly had one, and with a quill stem too. but that was 'toasted' in an RTA.
So move on to no3. its a sloping tt disc tourer. I didn't think I'd like it ,as I too have an eye for the out of plumb. Ironically a horizontal TT frame looks crap without a quill stem. It looks even crapper with a semi erect ahead stem on top of a stack of spacers. Once you realise this, then custom IS the only way. OR
A sloping TT 'compact' disc, actually (dare I actually say it) looks quite sexy with a longish seatpost, and an gentle upwardly sloping stem ( 0 deg rise). I never thought about the astheticts of a compact, but they look crap with a horizontal stem. Its all about following the angles.
Just start looking at compact discs (CD
) and you'll see what I mean. Its a modern thing, discs on a Horz TT LOOK wrong, a bit like wire wheels on a Ford Focus, .......yes you could, but.......
?