Start with Bose EQ, then adjust.
This would be for systems that have a LF device in the same listening area as full range of HF devices. i.e. - MB210s or DM10S-SUB supporting RMU or DM6SE.
The ability to adjust the crossovers up or down slightly based on weather or not you're adding a sub would be easier if there were a button that would unlock the EQ, and at the same time switching the EQ drop down field above to "Custom" while retaining the EQ (not resetting to flat). Then the EQ can be tweaked slightly and still read as "Custom."
Same functionality for PowerSpace+ would be great.
See attached image for clarity.