Moderator and Circus Hand.
The device of my Dreams would be something akin to the DSPeaker Antimode X4 without all the extras. A digital room correction device that goes in the chain in either a monitor loop or even between the Pre and Amp(s). Can be bypassed if desired, and can do room sweeps and base configurations from the device without requiring a dedicated laptop. Like the Men220 from Mac which I think works like this? but updated to handle the formats of today? That would be super.