After some shuffling of bedrooms, it looks like I'll have a much bigger place to build a layout.  Going to go with a folded dogbone.  It's roughly 8x12.  It will include the switching layout I've already got started.  Although I might redo the benchwork to use something a little more sturdy.  The curved switch in the top left corner will wrap around the edge and connect to the lower level staging.  I think the upper level is finalized.  The staging level I need to get a way to turn a locomotive at least. 

So when you don't really have the room to dedicate to a permanent layout and are given a decent little roundy, round my a fellow forum member, how do you make it a little more enjoyable than seeing 6 car trains doing circles?

You build a #6 18/24 curved turnout so you can connect a switching "module".