- ability to save territory/score in SGF as node
- editing and adding of properties (especially comments)
- better display of variations
- better display of common properties
- optionally show atari
- ability to play problems
- handling of line-break in SGF values
- allow resizing of canvas to scale board
- better Tk packing
- ability to create problems
- numbers in showgo need to make mask if not on stone
- partial boards in showgo

- user management
- pluggable computer players
- internet server games
- point-to-point network games