Hi jm.pascal,
I actually got in touch with one of the Alfresco engineers who said they were going to add the above functionality into a maintenance release of the Android app hopefully within the next month or two.
I wouldn't have thought that knowing what the hostname of the Alfresco server was required in order to just simply open the app; the requirement's a lot more basic than that - the hyperlink wouldn't necessarily <em>have</em> have to point to the host, just open up the app itself where the user can browse to whatever the need. Rather than having to drop them out of their current app, then to home screen, then to app drawer, etc. etc. But thanks for the response.