Well, this should be a VERY interesting read once it is completed. I don't have much to add, but I think a look at an individual's growth, similar to AlphaZealot's article would be an excellent addition.
For example, my own growth through the metagame of competitive Smash has been an interesting one. My friends and I all started out on N64 Smash. We knew nothing of advanced techniques, only obvious things like the brokenness of Kirby's aerials, or the ridiculous power of Ness' Bat. From here, we discovered things like move priority and spacing, using little tricks(mindgames) to break each others' defenses and move into a combo. For years we were satisfied with our skill level because there was no one else in the immediate area who could challenge us.
Then came Melee.
As with the original game, we quickly latched onto the basic gameplay concepts and began building a new metagame where rolling and spot-dodging were integrated into our bag of tricks. Then one day we discovered our first Smash tournament. We had been reading for years about tournaments for games like Street Fighter and Madden, but for Smash? Our most beloved game? Impossible! Yet there it was, staring us in the face. A quick 2 and 1/2 hour drive later, we had our world rocked.
We did well in our first round matches(except for my cousin, who had the honor of being 3-stocked by a then up-and-coming Rob$). It was from the second round on that we started being systematically annihilated by new, unforseen techniques. A Link who didn't lag horribly from his aerials? A Luigi completely unlike mine--seemingly sliding in and out of my attack range? A god-like Falco who pelted you with an onslaught of lasers? Who used the reflector as something other than a reflector? Marth? Who plays him seriously? and of course, the Sheik users... oh God the Sheik users...
Needless to say, we were shocked out of our nooby little minds. I was even arrogant enough to beleive that we had been 'gliched'. Once the shock and awe wore off however, we tore through the internets, searching for these advanced techniques that had owned us so. Many of the tourney goers were cool people and even gave us advice. One even gave us the link to SmashBoards... our games were changed forever.
We all spent the following weeks and months learning everything we could about our respective characters; incorporating wavedashing and l-cancelling into our game. However, our basic game took a hit as all do once we started actually playing serious matches. We survived this initial disappointment and pressed on. Unfortunately, some of our group dropped Smash entirely, unwilling to adapt to the new changes in playing style.
We've been entering tourneys and traveling ever since. We've even helped develop our own community of Smashers here at home, who have had the honor of playing and meeting several of the major pro Smash players thanks to our encouraging and their own perseverance and practice. We even had FastLikeTree and Caveman come to our most recent tourney(who owned us, of course, but not as badly as expected). Forward was even going to come, but he unfortunately was trapped in Colorado due to the bad weather that week(which led to the creation of his new combo vid, actually).
Anyway, the point of this wall of text is to say that I have personally experienced all the levels of AlphaZealot's article and have only recently begun to enter into that higher level of Smash due to my own resistance to learning some of things that separate the great from the merely good, but it is all true. If you want to be any good at this game, you HAVE to be willing to learn everything there is to learn about your character of choice, and then pick up other characters that compliment your style and cover the weaknesses of one another.
I really hope to see everyone examine their game and see the things that have been discussed in this thread. It will be a very rewarding and enriching experience for you and your continued growth.