Many elements about this particular version of Smash are pet peeves for me. Off the top of my head, here are some of the worst offenders:
1. Replays do not allow descriptions to use more than five digits. Why?! I am forced to use some lookalike digits (ohs for zeroes, capital i's or lowercase L's for ones, etc.) just so I can describe my high scores.
2. Replays cannot be saved onto SD cards. I hit my limit of 230 replays on the console just recently. Brawl allowed 1000 replays at a time to be offloaded to SD. I can only hope a future update resolves this, because this is a downgrade from Brawl.
3. Mii fighters cannot be used online outside of friend matches. At least give us an option to use generic faces!
4. GameCube controllers aren't supported for the demo games in Masterpieces.
5. GameCube controllers can bring up the Help menu and test custom stages, but cannot exit.
6. Menu selections always rumble (unless you unplug the gray USB wire to disable rumble from GameCube controllers altogether.)
7. Ghey-mer stage.
I'm sure I am forgetting others.
Agreed 100%. I'd say roughly one in every four matches with random people have 500 ms input lag. Yes, I am literally watching my moves execute half a second later (or worse!) even on a traditional tube TV. Brawl had its share of choppy matches, but never ever did it suffer the ridiculous input lag that Smash 4 has. I rarely play online outside of friend matches because of this horrendous flaw.
The whole menu in the game and UI in general just drives me nuts.
The layout is horrible, why not reduce the screens and consolidate everything? Put it in list form. Navigating it for new players is like a maze. I know it may not look as cool but a straight down list would be a lot more user friendly.
Melee definitely did this right. Sure it wasn't as "pretty" but it was much more intuitive, seeing the next level of menus at a moment's glance. One would think that menus would at least be tappable on the Gamepad, a la Kart 8....