Sometimes controller autofocus to what whatever group, sound or menu a user selects is undesirable, some independence options would be cool. Ability to lock a group/sound to a specific controller. Example 1: Finger drumming on an MK3 while playing a synth in Jam/KK-S from another a group, each controller locked to a different sound/group. Example 2: Lock Jam to a group while the MK3 remains unlocked has normal focus behavior. It could be either a Lock feature or just plain independent control where selecting a Sound/Group in one controller would not affect another, one of the controllers could have software priority over whats displayed on the computer screen.