Just one thing to mention here.
I don't rate animes like so many other people do, based on partial scores for i.e. plot, audio-visuals, characters etc.
What I rate is how much I enjoyed the show. If an anime consistently made me laugh (OPM), shed a tear (Shigatsu...) or made my brain overheat (I see you, Steins;Gate) I'll give it 5 stars.
If I enjoyed it but it didin't have this "something" in it, I'll cut a full star at most.
It doesn't matter if a story was cliche or the opening animation was weak.