The other option is cassettes; picture them like barges on the ocean, coming in to dock to load or discharge trains. The beauty of these is easy reversing of trains combined with the ability to join more than one cassette together to mix and match trains without having to handle models with delicate details. The cassettes can be provided with high sides so trains can be safely picked up and stored away. I saw this idea on RMWeb, iirc, using sheets of gloss-coated particle board like is used for kitchen cabinetry.
Works best with shorter trains, so suits narrow gauge, industrial and any British railway modellers very well!
Just a point of clarification: Sector plates can be designed such that they can be used to turn a train (or locomotive) in a 180 degree arc. Instead of having the pivot point being a fixed stereo plug, have the plug fixed such that it can slide back and forth along a slot cut under the plate. If you are willing to look, there is such a reference in one of Carl Arendt's scrapbook pages...which will illustrate the point much better than I have here.
____________________ "Keeping my hand on the throttle, and my eyes on the rail."