Apart from upgrading the app to allow direct access to a range of streaming services, from the likes of Tidal, Qobuz etc, the other upgrades that the Formation Duo could benefit from are some form of basic DSP room adjustment, similar to that provided by Dynaudio and KEF; and a modification to the Formation Audio box, to allow more than one external digital source to be connected to the system, with a choice of connector types (optical, co-ax and usb).
Only having a single digital and a single analogue input on the Formation Audio, is scandalous at a price of £600.