I'd be very interested in a feature which would allow you to specify the exact location (timewise) where you want the cursor to be. Also the exact width of a selection area. This would be very helpful, cause quite often I am cutting music and know exactly how long a bar is, and wish to cut out, say, 8 bars in the middle. With this feature I can jump straight to the start of those 8 bars (if I know which bar it is!), and can easily select exactly 8 bars, and then do whatever with them... :)
oh, another thing is perhaps an INSERT function which could (amoungst other things?) insert a specified amount of silence into the sound clip at the cursor?