I'm curious which answers others will give to these questions. I'll post my own answers as a reply to this post so as to avoid dynamiting the pond.
For the period from 2017 to 2020...
- Most consistently overvalued player, based on cost in the Community Market?
- Most consistently undervalued player, based on cost in the Community Market?
- Most-glaring omission of a former player from the Legend / Flashback series?