Well, I don't really think I've been around long enough or know enough to answer this question to the fullest extent it could be answered, but I will say that I never looked at the game in terms of those three people. I saw people looking to combo/strategize better during Ken's area, and I saw more gimps and edgeguards and efficiency during M2K's and Mango's era, but really it all just started with M2K. I just think people will learn to be more efficient and precise or whatever their own style involves(I still believe personal style is better than anything done second hand like lots of autocanceled Bairs for Falcos because Mango does it for example), and I personally believe there is plenty of room for everyone(EVEN THE TOP PLAYERS) to improve on that.
Is there a new direction of focus? I have no idea, but I'd love to see/invent it haha.
I don't know why, but I don't feel like Armada fills that role of "King of Smash" well. He has a great smash attitude, but maybe that's part of the reason I don't see it lol. If Mango and M2K do back out of Melee though, then I could certainly see Armada dominating for a while until we learn to deal with him(or just get our Falcons to beat him I guess.....half joking, as I'm sure he'll be learning that Falcon matchup).
As for me, I don't think I can do it. I don't have that natural talent, just the hard work. The people that go above me at this point(aside from a couple squanders I've had) have that talent AND hard work, so I'm outclassed.
Who knows, I could prove myself wrong and find some new/better way to play and put myself in the upper tier of players, but right now I just take things slow and set lower goals like "beat Shiz and Zhu in tournament" or "rematch Lucky", stuff like that.