[Mark Wheaton]

My interface suggestion actually harkens back to the 1800's (in computer terms)
I'd like to see more use of list editors.
For instance
how about a spreadsheet type of grid of check boxes/pop ups for setting Ins/Outs/Voices/Panning etc? this way you could tab through the settings for all tracks very easily.
how about a list view of the timeline showing regions start times end times, fades etc? Then you could command-click, shift click and rearrange all in one list instead of scrolling around the time line. by grouping tracks or using multichannel tracks you could edit very nicely. Of course this would be an additional otional choice for those of us who find this type of stuff useful.