Could be I'm just ignorant of these feature but 2 things I think would be useful:
1. In the scanner software the ability to locate a specific frame or the first occurance of a specific PID value. Say for example you want to move to the first data frame where the RPM PID is >= 6K. Even better a 'find' and 'find next' type feature where you could quickly find a frame that met multiple PID criteria.
2. In a custom OS the ability to wire wideband input in the 0-5V/AFR range into the PCM. Seems most PCMs have some unused pins. All you'd need to purchase then is a self calibrating wideband sensor. Probably easier said than done.
Just a few thoughts, love the product.