After endless fiddling with SCARM I finally settled on a design and have built it out. I decided to add an elevated return loop on top of the tunnels to add some interest. It's a 4% grade which definitely requires some attention when coming down off the plateau though my 6 year old daughter hasn't derailed it yet (knock on wood). It's a fun layout with lots of variety but only two remote switches and two manual switches (the switch for the elevated loop is manual). Now on to landscaping.... 
Looks awesome! I came across your thread and think I might just have to snag some of your ideas for my upcoming garage layout. I see a Santa's Flyer Just got that exact set for my 4 y/o daughter this past Christmas.
What is the green 'carpet' covering your table? I can't quite make it out from the pic. Does it work well with damping some of the fastrack noise?
Oh and about the Santa's Flyer, if yours has trouble with making smoke let me know. Mine wasn't working at all, so I opened it up and went through a couple of steps to get it going. Works about as good as can be expect now, perhaps even better!
