No to think I'll love this is what said to keep the expectations high. And having something in favourites without watching or reading is a very ass reason I have heard. That's why people rate or spread rumours blindly, and that's how the show gets overrated or overhated.
Some anime from which I have high expectations (probably I will like but not my favorite yet because I haven't watched)
Tákt op. Destiny
Komi can't communicate
Dororo
Dorohedoro
Vagabond
Pluto
SAO progressive
Upcoming Bleach
Jojo part 6