>>18770045Character customization isn't going anywhere.
While I wouldn't be shocked to see Amie go, I also wouldn't bank on it. At the very least, we will probably see something very similar that lets us play with out Pokemon. Interacting with 700+ Pokemon took a fair bit of time, I'd be willing to bet they justified it by making sure it would be easy to port to future generations.
More realistic features that will go the way of the Duodo will be Trainer PR Videos and Friend Safari.