At the moment it's possible to open Collector for ArcGIS using URLs like this:
that specifies what map to open or
that also includes a coordinate to zoom to in the map. I'd like to see more options e.g. opening a specific feature for editing
It should have the same options as using URL parameters with WebApp Builder!
This would be useful for creating QR codes on assets to launch collector for that feature, sending urls in emails and texts etc. etc.