Hej Thomas,
if you by 'Source selection' e.g. mean selecting (your) netradio stations by clicking a Radio icon without having to navigate through several submenus to get to the favourite list of TuneIn - then yes, high priority!
And please make it possible to access Radio stations with the number key on a remote - for those of us, who use the physical remote/s.
And please make it possible to remove the sources, one does not want to see.
Respectively to edit the priority of the sources - the linked ones included.
'My buttons' - that would be great!
You did not mention 'Grouping' of devices to play/control - but I guess that is part of the intended features - is that perhaps, what you mean with 'Expand'?
Personally I would prefer to give a 'search field' in Deezer priority over anything else in that source - but that probably wiill remain wishfull thinking ;-(
Possibility to edit the order/priority of the DLNA servers reachable.
That is what comes into my mind right now.
P.S. Don't forget the iPad version - I guess a lot of users want to control their setup using a bigger display.
MM