My dream bike would lend a lot from this 1934 Goodyear Zeppelin Duralumin Cycle...with modern, much thinner wall tires of the same width, running at 45psi. The frame would probably be a Magnesium Alloy, possibly the highly flammable type. lol So, Polishing might be an issue.
...and a Pinion 14sp Internal Gearbox! Polished!!
....larger, sealed bearing, aluminum 7075 finned versions of the ND WD front brake hubs on front and rear.
.....with rod brake style control linkages, chrome lug style fittings, connected with hollow 7075 tubing.
......you know, subtle upgrades......