Projections is a perfectly good early Doctor episode. It walks so that later Doctor episodes can run and be even more amazing. For me, in re-watches particularly, it has at least one too many fake-out to make it really great (the false ending with Kes in sickbay). A few more on that list a really good too; it almost pained me to put Living Witness on there for example because I love it. I felt a little better about it when I went back and saw that almost all the TNG episodes that do fake-outs were good to great.
Voyager constantly uses the "everything goes back to the way it was" ending, but I didn't count all of them because they're mostly not designed to fool the viewers. Threshold is a fine example of that trope and a bad episode (though I softened to it a little bit listening to the Delta Flyers podcast; at least I get what they were going for now) so I'm right there with you on that one.
Good metaphor, particularly for Cause and Effect, but that episode doesn’t qualify because every loop iteration actually happened.