1) You can not tell what way is up and what is down on the remote without looking at it, in the dark, watching a movie.
2) Remote seems to be designed to be miss clicked and it wakes up the ATV, and whatever movie you were actually watching get's interrupted.
3) Apple's useless apps takes up half the screen.
4) It's marketed as suitable for light gaming, yet only 1 (!!!!!) button on the remote can be utilized by game designers
5) Discovering ATV apps is HORRIBLE, EVEN worse than ios appstore
6) Bad password management (if i have a content focused app on my iphone, with a login then make the very simple infrastructure it would require to suggest that app on the apple TV and include the password from the same apple ID so i do not have to type it in again with that commodore64 style keyboard!
7) Siri, she's great in their presentations but endlessly frustrating to actually use.
8) Stop hiding Airplay fails! when stuff just "magically" NOT work there is NO error messages and it's infuriating when you do need it and have to do whatever raindance it takes to get it working again with no feedback apart from "oh, now it just magically decided to work!"
I could go on but i gave up on it and now just use it for airplay and for accidentally interrupting movies, the ATV4 interface is pretty, but it is absolutely not good UI
1. By virtue of the trackpad being far more versatile and faster than the d-pad remote, by default, it's better. Apple has always been about symmetry, maybe to a fault, but the up/down isn't a big issue... there are so many quick, cheap ways to address that if it bothers you that much.
2. You can mis-click any remote with physical buttons; you can't blame a remote for user error
3. Just because Apple's apps are useless for you, doesn't mean they're useless... I use most of them fairly regularly. You can also easily reposition them or even put them into folders, just like with any iOS device which shows the power and versatility of the remote and UI
4. I have several games that utilize more than one button so I'm not sure where you got that info. You can also get a game controller for more precise gaming
5. I don't understand what's so horrible about the app store
6. Apple TV isn't a personal device... I wouldn't want someone downloading/renting/ paying for stuff without passwords. The keyboard is optimal for the hardware interface... 2 to 3 swipes gets you from A to Z... no more click up, click up, click right, click right, etc. trying to navigate through an alphabet with random breaks, making it that much harder to find the letter.
7. Siri works well for me... "what did he say?" is absolutely brilliant and I use Siri for ff/rew with precision, finding movies by genre, actor, etc., sports scores, turn on/off captions, etc.
8. Airplay has always been a bit finicky... I agree with you there. But that's not an ATV specific problem. But the ease with which I can switch speakers while watching a movie or show with a quick swipe down on the remote is tremendous.