yes, i am. i did not notice Francois’s design report - thank you!
i read through it and while i like the idea it doesnt go far enough for me. back than when the openmoko showed up i designed a mobile software stack (but had to abondom it as the hardware wasnt good enough at that time). my idea was a complete separation from data structure and graphical representation plus a generic view on the data (which could to some degree answer the question on how to react on new backends). i thought of a single program showing communication with friend, be it sms, jabber, email, calls, matrix or whatsoever.
i know (from discussion with the matrix people) that such an abstractionn is quite difficult if not impossible. i know as well that other people think of the very same thing (see chat program DeltaChat which is in fact an email program).
in my oppinion the idea of apps is a marketing one (you cannot sell invisible services in the background well but you can sell bundles manifested by colorful icons). open source does not have this motivation (while there are movements into that direction which i consider a wrong way).
so i think a re-thinking of everything is really needed, far away from the idea having the desktop copied to a mobile.