Wasn't anyone ticked off.. (spoilers)
After L died, and then suddenly two "mini L's" make an appearance to basically carry on the exact same story? It's as if L's death didn't mean anything, as nothing REALLY changed in the story.. Subtly, but meh. I was hoping for a new arc, perhaps going into depth how Light was actually changing the world, or SOMETHING.
At first this show had me glued to the screen. the complexity of the story was very refreshing... But nothing REALLY changed. It was always the same. L gets ahead of light, light gets ahead of L, etc etc etc. Eventually I started browsing the internet while keeping one eye on the episode, just so I could keep up with the story... But my interest seriously dropped after L's death. After skimming this forum I think others have been affected the same way.
I still liked the show, but it just never really branched out, to me.