I also want to make the switch away from Lightroom and it looks like that you here might have the solution for my problem. The Lightroom feature, where I can import everything on my PC and then sync these "smart previews" to their cloud and then hand out a link or just a tablet to my wife, friends or anyone, makes everything so much easier. They can then decide which photos they want to keep or be deleted and also label those, which I should develop first. Is there a FOSS (or at least non-Adobe) solution that would give me similar possibilities? I'm not afraid of hosting something myself.