I don't see how moving the categorization of "feature request" vs "bug" outside of labels helps anything. That must makes it harder to do the inevitable re-categorization that will always be required since the line between "feature request" and "bug" can get subjective and fuzzy depending on how one views the purpose / spec / scope of a project.
If all you are saying is that it is a UI issue to mix those two categories when you open the issues page for the first time, it is pretty easy to bookmark or link to a list of issues filtered by label.
I don't know what more I can say to make it clear that "there are workarounds or workflows which make it possible to separate bugs and feature requests" doesn't respond in any way to what I'm saying, so I'll just step out of the conversation now.
The question I was trying to ask you is: What do you see as a better way to separate bugs from feature requests and what makes that way better than the existing system?
If that doesn't relate to what you are saying in anyway... then I am really unclear on what you are trying to say
If all you are saying is that it is a UI issue to mix those two categories when you open the issues page for the first time, it is pretty easy to bookmark or link to a list of issues filtered by label.