Really? I thought it was the most consistently good of all the shows, right above TOS (I'd rank it higher, but S3 really went through a bad batch). Unlike all the spin-offs, it actually has a solid start, though nothing great compared to what came after.
Just way too many episodes that felt like filler.
But I'm proud that the Star Trek universe has room for all kinds of stories, even the ones I don't particularly like.