Quote: "I don't want to begin a group project, I want to join one."
Then maybe you should provide a small overview of your qualifications. E.g. whether you're good at programming, game design, writing, modelling, pixel graphics, composing etc.
Judging from your few threads here (all except 2 of them dating back to 2011), it's really hard to tell what you do, and what it is you're looking for in a group project.
Quote: "DBP is a lot of fun, but lets not get crazy here. C++ and C# is where the real world is. That's like saying I might steal someone's LEGO layout."
Hotline Miami was developed in Game Maker...
While it's certainly true that very, very few successful DBP games are existing, I'd say that's due to other reasons than the language itself.
Also, a good idea is a good idea, no matter if you're working on it with DBP or C++.