new track ideas - fixed siding directions - 2 -O27 switches left - accessory sidings in - a passing siding -
added O track - whimsical, but will teach the boys switch control - non-derail will be helpful as they can run multiple routes by changing one switch
kept switches and sidings near the edge - that's where derails may happen and accessory operation may need assistance
added a couple of two curve tunnels - kids like to get at eye level and watch the train in the tunnel
you can decide how to deploy the two remaining switches - there is space for sidings
SCARM menu bar > Tools > Parts List will create that to compare to your inventory - an O27 cross, some O27 half straights and a cut track is all that is needed
Oh, I like the location of the control panel - good view of most of the layout without rubber necking
Try running the basic simulator to test for play value - it's cool in 3D
