Been using Vive Pro wireless for 7 years and couldn't tell a quality difference. Just annoying when sometimes it screws up and everything goes black.
Discussion
I had the Vive wireless adapter and was really impressed at how good it worked. It used WiGig though, which had its own quirks. I assume the Pro used the same?
The BSB has significantly higher resolution requirements. I wonder what tech could support the bandwidth. From what I hear, the compression-decompression is a big challenge. Maybe it would require adding too much compute to such a small form factor.