Only good things about Brawl were some of the new characters, SSE and cutscenes for the first time, and some of the new remixes. Melee is way fucking better even from a casual standpoint.

>feels way better to play
>items are fun to use while not being too OP
>stages are all fun to play on barring maybe Icicle Mountain
>trophies are mostly all original and a lot of shit never had 3D models before and never have after
>soundtrack is smaller but is all consistent in quality and style
>classic mode and adventure mode are always good for a quick run-through, and don't become too repetitive unless you're trying to do every fucking character in one sitting

Everyone always goes straight to comp or compfags when discussing Melee, and that can be fun too, but Melee is still fucking amazing even just for booting it up with friends or whatever. Hell, I'd argue Smash 64, especially Smash Remix, are way more fun with everyone than fucking Brawl, Tr4sh, and Ultimate at this point.