Please implement this in addition to the inline-prv. They both could share midi-data for fast switching between them (maybe via shortcut or a button at the top of the track).
This would be really usefull for me to edit e.g. drums faster or setting up a simple melody for testing issues etc. , and would integrate the stepsequencer more into the sonar-workflow.
At the moment the stepsequencer is more like an independent program.