Sorted by importance:

Quality

• Avoid bugs that cause render corruption Set up output consistency test #8
• Preserve all comments as possible #16
• Correctly handle incomplete code tolerance of incomplete code #6

Integration

• Improve quality to a degree that it can be integrated into tinymist
• Range format range format #27

More Quality

• integration test target bigger projects More comprehensive output consistency test #20

Functionality

• Function call/array/dict flavor detection #31 Content math bad case #21 flavor detection

DSLs

• Avoid breaking DSLs embeded in typst: cetz, tables, fletcher #17
• [ FEATURE ] Format #table in a human readable way #59

Semantic format

• Use tinymist-analyze to get more info to help format.

Math

• better handling for math alignments

Performance

• Consider reimplement the pretty printer: Currently impl could be exponential in some cases. This also brings more feature other than rust's pretty: https://github.com/fpottier/pprint

Comment

• Reduce no format cases #46
• reflow comment and maybe content #104