Hello, and welcome to the forum!
AFAIK:
- Manual repeats playback – NO, not for the time being, but there are ways to work around this in certain circumstances while waiting for the real implementation, e. g.: Second time only
- Custom input midi CC automation in any bar – YES: Automation lanes
- Reduce two staff to destination one & “Fake” staff for PARTS, no for playback – well, technically YES, but you probably don’t need to: Condensing
- Automatic add chord symbols from notes – YES: Chord Symbols From Selection | Introducing Dorico 4 - YouTube
- Automatic add note names – NO, not for the time being, although you could use the ‘Pitch Name Noteheads’ notehead set for similar purposes: Pitch-dependent notehead set designs