That's a good point, and I completely agree that it hasn't gotten far.
I do think that if it were to be embraced as a more common standard on websites, building a more standard UI on top should be _relatively_ simple as each websites underlying data would _hopefully_ be structured the same.
I do think that if it were to be embraced as a more common standard on websites, building a more standard UI on top should be _relatively_ simple as each websites underlying data would _hopefully_ be structured the same.