SSB Brawl was and still is an enjoyable game, but it has glaring flaws that prevented it from being the best game of 2008 (that rank goes to Space Invaders Extreme).

1. The character roster: Even though I enjoy many of the game's fighters; many of them were completely unnecissary. These are:
Toon Link
Wolf-I liked playing as him, and Jay Ward did a great job; however, he's still superfluous.
Ness-Even though I like Ness, but wasn't Lucas enough?
Seriously, the clones only worked for the First two SSB games, but here they weren't really needed. There were characters that could have used some much recognition, such as Mike Jones from Star Tropics, the BattleClash crew, Saki from Sin and Punishment (even though he was an assist trophy), Muddy Mole from Mole Mania (I remember seeing it at Service Merchandise over ten years ago), or what have you.

2. The music: While many of the songs are good to great; SSBB suffers from quantity over quality in this category and a good share of the songs feel out of place. They should have gotten Kenichiro Fukui to do some original scores because he knows how to make some great action pieces. I also feel that Jay Ward's narrations were completely unnecissary. However, I do like how they worked in that Game Boy Game X into the song roster. (Fun Fact: Fukui was mentioned in the credits of BattleClash and Metal Combat: Falcon's Revenge.)

3. Online mode: Look, I steer clear of online gaming for various, unrelated reasons, but I think they should have upped the number of onscreen characters from four to eight.

Overall, these are the biggest flaws with SSB Brawl. There are more, but I can overlook them. Besides, I'd rather play SSBB over MGS4 any day. (Note: The MGS4 quip was meant to be a joke.)