On the technical side, this seems nicer than pingbacks (which uses XML-RPC).
On the user side: dunno. I never found value in pingbacks listed at the bottom of a blog post, and I doubt that a different technique in the background will change that profoundly.
If the other page uses microformats I'm displaying their content under my post, like for example: https://jeena.net/photos/201
I also show the reposts, likes, etc. there, I even aggregate those from facebook, instagram, twitter, flickr, etc. with help of https://brid.gy/ which translates fb, tw, etc. to microformats and sends a webmention. And I'm getting more and more native webmentions, but that is most probably because I'm active in that community.
On the user side: dunno. I never found value in pingbacks listed at the bottom of a blog post, and I doubt that a different technique in the background will change that profoundly.