Browser should be made into the main window on Windows
On Windows, when you close the last opened project, it closes Reason, so the next time you load a song, you have to wait for Reason to load. When on a computer without a dongle, you also have to log back in. It's annoying and adds another bump in the workflow.
It might make sense for the Browser to become the "hub" from where you can load projects, set frequently changed global options, drag and drop presets (both internally, externally, and to/from favorites lists). When you close the browser, you close Reason (at least on Windows).
I dunno, it's just an idea, thought I'd throw it out there.