While I wouldn't like a parrot review, I admit that a "Good job, update!" would at least be 'somebody read this, not just clicked by accident'.
I prefer a review that tells me what that reader liked or didn't. Whether I've heard it before isn't of consequence (unless it's something they didn't like, in which case that indicates there's something lacking in the story [in the case of one of mine, a second chapter is what's lacking, because two of the people reviewing have stated that they don't understand a character's motivations, and that's because it hasn't been revealed in the story yet]).
If more than one reader tells me I got the characters right - that I wrote my fanfiction in character - that's high praise.
If more than one reader tells me my character interactions are believable (fanfiction or not), that's high praise.
Those are the kind of comments writers live for, and just as equally I delight in readers telling me - civilly, mind you - where I can improve. If I'm trying something new (and to grow as a writer, I should be), I want to know if it works, if it doesn't. If it almost works, and needs tweaked. Has it been said before? Okay, have I had the time and opportunity to correct/tweak it and not done so? Perhaps the review might then start as I have started some of my own:
"I see so-n-so advised you a few months back that your depiction of 'x event' might perhaps benefit from some additional consideration in its depiction. I'd like to add my voice to that opinion." With examples following of how it can be improved.
That is constructive criticism, and the highest accolade a writer can receive is being told their writing is worth being improved. There is always room for growth.