I still hate that show for making me sit through 7 seasons or whatever of cliffhangers and then answer none of them

My favorite abandoned plot was Michael's son. Weird kid that has weird things happen around him, like multiple birds killing themselves by flying into the windows of whatever building he's in.

Then puberty hit that poor child actor like a sack of bricks, and the show runners just decided to write him out and never bring up that plot again.