I'd really, really like to be able to do keywording on my iPad in the LR mobile app. Could save me a lot of Google-time back at the deskt...
Lightroom Classic: Ability to sync Smart Collections with (Lightroom CC / Mobile / lightroom.adobe.com)
Collection synching / Lightroom Mobile is a great addition to Lightroom 5.4. Please extend this functionality to Smart Collections as well.