I love the multi-resource display, and use it all the time.
But it frustrates me that I can't see the interlinear ribbon for 'slave' resources, only for the 'master' resource. I know that I can click on the words in slave resources and the 'master' ribbon will move to the right location, but that's not always helpful.
For example, I'm studying Colossians 4:3, with the NKJV and 2011 NIV. The NKJV has "open to us a door for the word" and the NIV has "open a door for our message", and I wanted to see why the versions translated the Greek text differently. In the end I had to open a new NIV so I could view it's ribbon, where I can now see that it's simply a question of what ἡμῖν actually fits with (there's no textual differences). But it would have been much better for me if I could have done that within multiview, rather than open a new resource.