For the people that pay upwards of $20 for a single decoration, and have given EA hundreds of dollars, I think they deserve to at least be a little entitled to expect some consistency.
My only real complaint from all of the updates was the ClausCo building in the Christmas update. Many people missed out despite getting 150k+ tickets (event was pretty much over at 30K) and had no way of obtaining it. I myself got up to 90K without exploiting the Homer/Lisa tasks and ended up getting 50 tokens with donuts before I finally had it, only a couple days before the event ended.
One of my neighbors is a completionist and has every single item since the games inception...except ClausCo. Kind of felt bad because I know he/she must have tried feverishly to get it, and to no avail. Pretty sucky deal when someone who has spent that much $ into the game misses out on something.