I think that both "Spectre of the Gun" and "West of Mars" episodes would have been improved by simply having a real world setting outside of the sound stage. Had they both been filmed outside on a backlot western street they would have been much more entertaining to watch.
Would they really? Or would they have just looked like the countless other '60s TV episodes shot on the same Western backlots that viewing audiences saw every week? Would something so commonplace-looking have really been more entertaining to audiences at the time?