looool Yeah the problem will be solved by metaknight.
Meta-knight is ironically probably the cause of brawl's suckage. I have a theory that the following is how brawl got screwed over:
Sakurai: As maker of the kirby games, I'm giving you exact specifications as to how meta-knight should play.
Developers: *implement* WTF? Meta-knight is so broken. Any noob can pick him up and get zero to death combos off the hit stun of his insanely fast lagless sword moves. You can't even airdodge to escape, because meta can just use his multiple jumps to follow you. And his wavedashing is INSANE!
Sakurai: But meta-knight is perfect as is... I know, just change the game a bit. Tone down the hit-stun, remove L-cancelling, and make multiple air dodges... And take away the directional influence on the air dodges to remove meta's insane wavedashing.
Developers: That would significantly nerf him...
Sakurai: Then we should buff him with a special move that lets him become invulnerable and fly around!
Developers: We can't do that!!! That would be so broken!
Sakurai: Who's the owner of this company anyway?
Developers: *sigh*
Wavedashing? Wave-landing? Moonwalking? Short-hopping (leading to SHFFL; early pros used ONLY full jumping; it looked silly)? Edge-hogging (on purpose)? They all came over time. They were not early 2002 discoveries.
Wavedashing was discovered by the developers before the game was released iirc. Not sure when it was applied to tournaments, but it was before 2003 I'm pretty sure, and with lots less people looking for it.
Wave-landing was pretty obvious as soon as wavedashing was discovered. I actually found wavelanding on my own without the internet. I would jump, then waveland into a smash with marth. I quit doing it though because my friends would see it coming whenever I jumped at a certain distance XD.
Moonwalking isn't really much of a factor on the meta-game.
However, even without this stuff, melee would still be deeper than brawl, with hitstun and shieldstun and many more options open at any given time in general.
The other stuff and much more is already applied in brawl, proving that "pounding the game" actually is effective. Also, I'm pretty sure than even scubs who know nothing of melee's competitive metagame and have only played a few times know of short hopping and edge hogging.
Yes brawl's metagame will improve. No, it will never be as deep as melee's.