It’s interesting, because the B3 had both a DI out and a DAI interface. Presumably they took them out of the B3n for cost but they would be super useful. It would be literally all you needed for home recording or live, assuming you were happy with all-digital.
A lot of people have wondered about a B5n as well, to mirror the G5n.
https://www.zoom-na.com/products/effects-preamps/guitar/zoom-g5n-multi-effects-processor
The G5n has a DAI but not a DI.