The Acadian Coast Eastern is alive and well.  Version 4 occupies a 17' x 16' basement room (plus a 3 track staging yard under the stairwell in the home I moved to in December, 2019.)  Here's the track plan -- basically a big wye with 6 modeled "town" locations plus the staging yard.  My track plan is below.  All modeled towns in this plan were designed as switching puzzles of varying difficulty.  You can still find pics and info about ACE versions 1-3 (all in a 14' x 12' room in my former home) at www.sandysacerr.com.