So I have circled back to trying to plan out 15mm terrain for games of Senshado. There are so many settings to choose from so I'll have to pick somewhere to start.
The Ooarai tank sheds and assembly area are too iconic to not consider doing. I could include a tank shooting range and probably use city terrain culverts, etc. as a driving/obstacle course.
The hedge maze would make for a great game. If built properly it should be able to cover the amusement park as well as a country estate setting from the TV show and movies.
Sankei train terrain would be great for the city fights but it isn't available in 1/100 scale. I'm planning on taking the measurements of the 1/80 scale buildings, scaling them down and then trying to mimic their style using foamboard, balsa wood and other scaled building details to make neighborhoods and businesses.