I won't blame him. The game took a while to come out but it was to remove bugs. To this day I still love playing Brawl and the only problem I have is that no one even brawls anymore except for a few amount of people.
Still, why do I get the- Ahh w/e. Hopefully he'll start on a new one soon, and one that has modes we'll care about

Personally, stickers were VERY useless. I think they've taken up space for more important features. The home-run game is decent for achievements, and that can stay. The trophy game is also kinda useless, and event matches should be customizable so people make their own rules and their own events, which WOULD be pretty great if you ask me. Trophies themselves are fun because they add a little info about every character/thing from Nintendo that someone might not know about. Also, they add great replay value to the game and have added replay value to Brawl. CDs are probably the best features besides the characters since getting them makes it so victorious. The music in SSBB was very well composed so getting things like Bramble Blast, Butter Building, Shin something-whatever (Forgot the name, but it's actually VERY good), and so forth.
If anything, what Sakurai SHOULD do is decide which characters he'll add, then leave the possible third-party ones for last. The first-player mode comes after; then by doing so, the decided roster is incorporated into the first-player/co-op modes. In all seriousness, the multiplayer comes first and that's that (and no, I am not fussing about character-balance. I am fussing about the amount of selectable characters and characters worth selecting).