My take...
1. Editing function: offer frame-by-frame function
Current rough cutting really sucks and the joints are NOT clean at all (scrambled images may occur)
2. Retention of 7000/8000d form
Better heatsinking (no need to cramp all components together); also allows for analogue input function
3. Better FS support
Currently only ext2/3 and (embedded) NTFS; exFAT highly desired
4. Ability to defect and alter (remove) CGMS signals
5. Better analogue input support (more on this later)