I have a pretty static vTuner preset list now with no plans to make many changes in the future. One minor annoyance is that many of the station I listen to start with the same 10 (or so) characters. The all look the same on the OLED display when trying to select a specific station. So I've learned to count how many front dial clicks it takes to get to each one. Sort of like braille for the B2 - workable but clunky.
With a little spare time today, I went code diving in the B2 via an ssh command line connection and found this file : /media/hdd1/b2settings. In that file, the tuner presets start at line 12 and take three lines each. Editing the 2nd line of each group (the preset's name) and the rebooting the B2 causes is to start using the edited preset names.
Success!
So I pressed my luck and added a 10th preset to the file. A long shot and sure enough, it didn't work. The nine presets are all we get with the current software.
tl;dr : edit media/hdd1/b2settings