Hi Ken,
I completely get where you're coming from, and I've been wondering the same thing. Speaking for myself, at our utility, I can say why I'm interested in this. It's because our IT team has selected Teams as the next platform as a strategic step in our overall technology plan. We are being forced to move away from network drives and towards Teams as a data store. With that said, Pro does seem to support url's much better than Desktop does. We're still working on the transition there.
So far, Teams pretty much does not support GIS data, nor CAD data well. Everything is a compromise at best from what I've seen. I understand their (IT's) goal and the reasons. And I believe that we're not the first shop to try to integrate and migrate towards a more sustainable way of doing business.
I'm confident that technology will eventually catch up to our immediate business needs and workflows. Meanwhile it's been a painful attempt to transition to url's vs. mapped drives.
Good luck, Bill~
