Isn't this basically the payment protocol? And this is only tangentially related but I feel it would have been good to pursue a pronounceable, Urbit-like alphanumeric encoding of addresses such as "machec-binnev-dordeb-sogduc--dosmul-sarrum-faplec-nidted" (which represents 128 bits in Urbit) in the first place but I guess it's too late now.
...for some definition of pronounceable?
If it's going to be that long and that bizarre, I don't think the trade-off of length vs. sorta pronouncability is worth making.
And as others said, any one particular address should not be something users bother themselves with.