I'm a competive Brawl player, and was a serious competitive Melee player.
Melee was amazing, but then when I got a hold of a Japanese copy of Brawl at the end of January (30th/31st), my crew and I were playing nonstop.
It was a tough transition, but I think if you give Brawl some time, you'll come around to loving it.
I've attended 3 Brawl tournaments here in Southern California (yeah, Gimpyfish/Blitz/PsychoMidget/Aries/etc were all there at all 3) and placed around 7th place each time (around 30-50 players). So I hope that gives my opinions some credibility.
I look at Melee now and wonder to myself, "How the hell was I able to play that game competitively before?!?!?" It's SOOOO fast, not to mention the constant wavedashing and L-Cancelling. Yeah, I don't remember how I was able to keep up at the tourneys.
Brawl doesn't have all that, obviously, so I think that gives the game a more back-seat feel to it, where you can now concentrate on being cunning and quick with your strategies and use more wit as oppose to the larger focus on WDing, LCanceling, super fast gameplay. Not saying Melee didn't have that, but Brawl seems to be all about strategy as oppose to "who can WD and LC better to inflict the most damage, therefore KOing more?"
I think Brawl is a breath of fresh pine-smelling air (with a side of lemon zest?). The slower pace of the game is a nice opportunity to really hone your skills in knowing your character's moves inside and out, knowing when to use which move, which ones have near-zero lag upon landing from air, what instance it is safe to perform an aerial upon landing (learning the which frames of the aerials have no lag when landing), and so forth.
This game is amazing. Melee was an amazing stepping stone to Brawl. As of now, after experiencing Brawl for a month and 12 days, I don't see myself ever wanting to touch Melee again if only for the sense of nostalgia. Brawl feels far superior.