Unless things changed since I last checked, the original plan was to make FT4 'work' in contest mode only. Yes, it's available outside of contests now, but for testing purposes. The sensitivity of FT4 improved in the latest RC. I think it's better than RTTY already. It does work better than the previous version, less repeats needed. So, I hear you, it would be nice to have FT4 'unlocked' in the final release.