May I mention there also have been a poll here, with various interventions among which my own
Regarding the four questions:
I trust continueing maintenance for the current version is important, and am quite confident as this indeed has been announced by FP in the pages you mention
for more modern versions, I for one absolutely don’t need them. I’d accept that only if the idea is to seduce more young customers, but honestly I’d prefer more support for e. g. F-Droid apps installation (coming pre-installed would be easy and cool) and more generally the questions 3 and 4 below.
Within the “poll” post I already explained that with my experience of OpenMoko and Blackberry I absolutely don’t believe a totally new OS would be enough to sustain the FP development. The most recent I considered wasSalfish, on Jolla phones, that is supposed to be freely accessible (some day), and features an abysmally low number of apps. So, well, yes for alternatives, but just dropping Android in the move would be a suicide IMHO.
Ideally, IFFF the thing is bearable to our small FP dev team, I’d appreciate the next FP to sport some kind of a dual-boot capacity, with (rooted, GApps-free) Android alongside a pure linux-based OS like Sailfish (if they still exist next year).
FOSS: Yes to this of course, but under which form is rather the question.
Support to F-droid, Fairphone-dedicated repositories…?
I fear starting actual development of new apps may be too far from the current team base. Unless the current business is so profitable you actually consider expanding easily?