I think the reason we are having such a difference of opinion is down to what you regard as excellence in rap and what I regaurd as excellence in rap, and sadly you have completely the wrong idea of what actually makes a good rapper.
Sucessful is one thing but talent is another and its clear to see that you don't regaurd the two as seperate entities where as I most certainly do. The fact that you are able to name 3 rappers 2 of whom have done absolutely nothing to further rap says it all really about the fleeting and pointless nature of the tag "future of Rap/Hip hop".
Since when was being a household name and selling records the mark of a genuinely talented rapper? You seem to think that its popularity that dictates who will drives rap forward, since when?
I do worry about people like you because clearly you listen to a decent amount of rap but I don't think you understand where Rap comes from and whats at its heart. Rap has always been an underground movement that comes from the streets which is where its heart lies. It has never been a popularity contest. Thats not to say that guy like Drake and Lil Wayne haven't had their underground days but it is to suggest that the music they produce today has very little in common with the roots of rap.
It means nothing when a mainstream pop journalists - who has a passing interest in Rap but does not really understand whats at the core of rap - showers praise on guys like Drake. These people will never trully understand where Rap came from, why it exists and why its future will only come from the streets.
You see the problem with guys like Drake ad Lil'wayne is that they make a genre of rap that i've now come to refer to as pop rap or college rap(PRAP or CRAP if you like
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). Rap music for the mainstream.
It focuses on simple beats, simple delivery and simple word play. Simple music for simple people and its not the way forward.
Are you seriously telling me you don't see the problem with Soldja Boy being a driving force in Rap? Reducing rap music to the complexity of ring tones is a huge problem. Again simple beats, simple flow and simple message for simple people.
Snoop Dogg and Eminem not only sold millions they also had a couple of key things which Drake doesn't.
(1) a genuine talent for delivery, flow and word play
(2)A sound that was not deliberately commercial(emminem has lost this lately)
(3)good/interesting beats(Snoop dogg especially with some excellent G-funk beats)
(4) genuine verve, agression and gusto
Drake has none of the above which is why unlike those legends(yes I class em as one) he is an average rapper. There is nothing wrong with a rapper crossing over into the mainstream as long as he does not have a sound which is deliberately designed to do so. Snoop and Em didn't, Drake clearly does.
This is the part of your post I actually found genuinely funny. Do you really think producing rap you can "sing along to" is a sign of progress or talent. This is exactly what I mean when I talk about reducing rap to the complexity of ring tones.
Yes i might have a verse of two of my favourite Wu Tang Tracks memorized but I really don't think that when good rappers take to the studio they plan to release Rap music that the masses can "sing" or even rap along to. If that was their primary aim then they might as well not take to the studio in the first place because that kind of attitude only produces the kind of commercial rubbish that guys like Drake produce. That kind of music has nothing to do with the roots of rap or a healthy future for it.
As for drake being sought after well thats to be expected when so many rappers in the mainstream today believe that the commercial approach (as in simplicity sells) is the way forward.
Again the issue of popularity raises it head again and again i'll draw your attention back to the fact that rap has never been a popularity contest in fact at times it has been completely the opposite. Why should it bother me if an indie artist is more popular than Young Jeezy? for a start Jeezy is Shit so thats where my concern about his career ends.
You ask what is progress in rap. Progress in rap is in a word complexity.
The last time I personally ever felt genuine progress in rap was when originally listening to Wu Tang between 1993-1997. Here was a collect of nine rappers each one with a completely unique flow brought together to make one unit whos sole intention was moving the game forward.
They brought the same intensity and gusto to their music that early NWA had(the last group before them to move rap forward) but it was a vastly different sound. Oriental beats with Violins and strings, excellent wordplay and a rawness that reminded you everytime that these were guys who were originally making money selling demo tapes out of the back of a van. That was progress and it was progress because there was nobody else like them before they arrived on the scene(something that neither Drake or Lil Wayne can claim). They took the same gusto at the roots of rap and moved it forward with geniunely intelligent production, beautifully created beats and to quote them: "witty, unpredictable talent and natural game".
The problem is in a way you may actually be right, Drake might actually be the future of rap in name only, he may be a definative sign of exactly where rap is going, the problem is that if that is true then rap is heading toward a very distructive path. Simplifying rap to appeal to the masses is not the way forward, reducing rap to ringtone complexity is not either.
I'm not suggesting that the Wu tang approach is the only way forward for rap but I am saying that complexity and the elevation to a true art form(which Wu Tang and many others have achieved in verse) is the way forward not commercial simplicity.
Others may highlight other sources of genuinely progressive artist in rap, Wu Tang are just a personal choice of mine. However what those sources must all have in common is geniune artistry or complexity to their sound. That for me is the only way toward progress in the game.