Booxtor I have two suggestions
1) Make the TOC collapsible like in PB
2) The iRex DR1000 (2.0 RC3 firmware) has a very useful toolbar at the bottom of the screen, where you can select some often used tools (like annotate, search, delete annotation) without having to go through all the menus. That would be a perfect addition to the M92 especially if it is configurable. I attach an image where this toolbar is shown.
When will the new batch of M92's arrive?