Stephan, great project, you can count on me for test. Definitely it will be a great jump forward, in the integration of non-BMW accessories to the bike, eliminating all the extra wiring, relays, etc. One important advantage, compare to competitors, might be that, (I assume) doesn't require to buy any accessory, to get the unit. Interesting, that these days, it is more possible than in the past, giving some actual accessories have less electric consumption, (i.e.LED lights), so they can be drive or command directly from the bike, eliminating the need of relays, cables, etc.
Along this subject, it can be fantastic if this unit or the actual interface, can provide the functionality of reconciling (harmonizing) the installation of BMW accessories. Today,at least in my country, you we need to go trough the BMW dealer, forcing to buy the accessory from them. i.e. GPS, LED Lamps, etc.