Buy it if you want to take a relaxing trip to the great outdoors without ever leaving your home.
Those with a high tolerance for repeating difficult 2D shooting challenges should buy it. Everyone else should try it in Simple mode or just by watching on YouTube.
If you ever had a good time with a previous Rock Band game, buy it and remember what you've been missing.
Buy it if you're ready to be an exceptionally patient pet owner. Watch some videos online otherwise.
There are better ways to get your superhero action fix, but there are worse ones, too. Crackdown 3 is at least worth a try.
All in all, these missing features and changes for the worse are disappointing blemishes on what is still an incredibly enjoyable game. Mario Kart 8 isn't the best game in the series, but it adds enough new visual, gameplay, and track design flourishes to its well-trodden core kart-racing gameplay to be worth a look.
Buy it if you can tune out the story for an interesting take on the open-world genre.