As a paying customer of both OS4 and MorphOS, please see the attached image as an illustration of my frustration with how OS4 development is proceeding. EDIT: Looks like the image uploader crunched down the resolution. If you can't read it, the two lines are 'Bugs' and 'New Features'
The time between releases is absurdly long. USB2.0 took literally years to materialize and is apparently still buggy. If the release cycle was much shorter, that wouldn't bother me so much - hence the inverse relationship between bugs and features on the 'Expectations' graph.
I'd rather see more frequent, less-feature-laden OS4 updates than we have in the current release model, even if it means they're buggier. Or maybe it's time to do away with the closed-beta and just have an opt-in, no-support, bleeding-edge, as-new-OS-files-are-available update model through AmiUpdate (like Debian sid or Debian experimental).
I don't mean for this to be hostile. I hope this is constructive feedback. If any of the OS4 guys want to discuss further, please get in touch.