I used to love riding the M3s to Manhattan (when the AC was working!)
Some interesting points...
1. Commuters interviewed didn't seem to mind the retro M3s returning
2. The @LIRR kept the M3s in storage, almost as if it was in anticipation of the M9s being further delayed.
Recently, the @GothamGazette published my op-ed on the push to build more housing within New York City's suburbs. You can read the piece here: https://www.thefoggiestidea.org/2022/07/06/gotham-gazette-stepping-up-suburban-housing-easier-said-than-done/