Would you be prepared to have Open Only PP if it meant a significant drop in the number of participants?
If it meant you lost 10 -20% or so (which would have been in line with % opinion when Sandro / OA discussed it) then I'd take it- however you can still please everyone by doing smart design. My old suggestion of having explicit jobs for each mode would be one way but can only be done in those modes (so the Open part is the combat side, the solo / PG is the logistics of generating the cargo / PP materials).
But as I said to Robert, it really boils down to 'players as NPCs or NPCs like players'.
Currently NPCs are living in 2015, and act like it against god tier engineered players, which is the crux of the problem, something that Open solves via brute force. If PP is to really be a mode agnostic feature FD will need to solve the issue of this- PP at its heart is a bubble wide war zone and NPCs / how NPCs spawn and attack just are not up to that. With U14 FD have built a prototype for this very thing, using missions and POI zones / BGS states, and danger is priced in.
In the end, I'll be happy with a system that scares and challenges me so that I have to
play PP. Right now its the thinnest PvE imaginable and far below what it was billed as.