FWIW, my list was not meant as a judgement of good/bad episodes as much as an introduction to the FLAVOR/GIST of Star Trek. I do agree that Trials and Tribble-ations
makes more sense if you saw The Trouble with Tribbles
first, but it can work as a stand alone episode, also.
“The test of our progress is not whether we add more to the abundance of those who have much; it is whether we provide enough for those who have too little.” -FDR
God gives us what we can handle, even if we don't believe it ourselves.