I don't know. I see the problem isn't a quality issue. The Berman/Baraga era was consistent in quality for on average for 17 years.
My problem is the a sameness of what was offered, from Encounter at Farpoint to These are the Voyages, it was the same show with minor variations from time to time, hardly evolving at all.
I will accept a wide divergence in "quality" if there enough variety to make it interesting. I've enjoyed some really objectively bad shows because of the freshness they offered, at least for a while, but they need to evolve to keep me interested.
Sameness, on and on. Nope. Thats the killer, no matter the level of overall quality that sameness is presented at, IMHO.