Haunted Mansion Holiday - It ruins a classic and displaces it for far too much of the year. Massively inferior show.
Parades - Personally I despise parades (having been a performer), but I really like how they can shorten lines in the rest of the park. Unfortunately, they've been so milquetoast for the past decade, and the parks so full of blasé locals, they don't have that effect anymore; they just cause congestion and noise.
Meet and Greets - In theory, I would like these for the same reason as parades... it sucks people out of the ride queues. In practice, however, Disneyland is on the tipping point of matching Walt Disney World's horrible Meet and Greet to Actual Attraction ratio. For every Meet and Greet that opens, Disneyland is one more step closer to WDW (Walt Disney Walmart).
Autopia - I mean, really. In California?
Disneyland's Fireworks - Really? Shut down huge swaths of the park so you can fill the sky with pollution?
World of Meh - Totally the most pointless "show" Disney has put out in many years. Though I suppose if you were a child in the 80's or later, your parents probably kept you shut up by endlessly playing the same videotapes (80's), DVDs (90's), or BluRays (00's) over and over, so I guess audience's standards are much lower.