The next Apple TV refresh looks set to bring with it Apple's next-generation A14 SoC according to a fresh rumor. Also on the cards is an Apple HomePod with a display along the lines of a Google Nest Hub and Amazon Echo Show after code examinations shows that Apple has switch to tvOS for the HomePod operating system.
https://www.notebookcheck.net/Next-Apple-TV-refresh-could-see-it-pick-up-an-A14-SoC-HomePod-could-get-a-Google-Nest-Hub-makeover.461269.0.html
The biggest flaw of the current generation of Apple TV is lack of VP9 codec support - result is no Youtube 4K support.
The second one is the remote (search in Google for "Apple TV remote is so bad that a Swiss TV company developed a normal replacement")