I am a current electrical engineer, not that it matters but here is what I would do. Next machine has a few modes that utilize FBS2 and multi-iq.
Let the user select which mode they want to run in. For me on most occasions I would run multi iq at the beach and FBS2 around old parks/home sites.
Relics I suppose would give the nod to multi iq.
If they can keep it lower cost lets say 1500$ with a nice screen, it would be a winner