Ah, the Revel plug in only worked in 4.x versions of LR for me. Maybe it's because I moved to 5.x later?
Yes, I agree, the Adobe updates lately have been broken and integration has been questionable...
That said, Revel (and the plug in) worked great for me.
On average, I manage around 2 TB of photos in my main LR library, and used Revel to share photos via mobile devices with clients/family/friends.
Using a web browser - as Adobe wants me to - to upload photos from LR to Revel is very inconvenient...and will probably force me to find another service to share photos on my mobile devices...oh well.
I don't see myself as ever needing or wanting LR Mobile...I would never edit a LR photo on a mobile device. And I would never want to sync a photo from a mobile device to my LR library. I don't even consider photos taken on mobile devices to be real photos...more like blips I upload to social sites like yelp...