If you have been following my posts on NYCTF, this really isn't news to you. If you haven't however, I've recently taken to recreating rollsign curtains from various subway car fleets. Here's a small sample of what I've been doing.
R44 front (1971)
R27-38 side route (1984)
R68 north terminal (1986)
If any developers need any sign curtains made for their trains (such as the retro versions of the R44 and R46 that have been hinted at), please feel free to ask. No fictional routes/destination though.