hmmm interesting…based on the past experiences and personal taste one retro bike philosphy / crtitera could be something along the lines of
what i wished i rode then BITD / Halcyon era of riding (choose a date),
what could actually ride / afford … then elevate these aspirational / inspirational frames to near mythical machines of yore / right now
= phuture classics…
Clearly this ain't quite correct…but it seems to be how the trend works.
As to future classics…have no ideas really but something prehaps something by Orange (popular) or Foes (similar engineering ethic but more boutique / exspensive)
1. exemplary cutting edge frame designs
2. people who make their own stuff , in their own workshops (probably out of metal)
3. what's good now…is good in the future…it certainly was in the past