When the FP5 was announced I was hoping (but not expecting) it would be a collaboration with GrapheneOS. My biggest wish regarding future Fairphones is for GrapheneOS to be available for them, as I’ve expressed in the Fairphone 6 Ideas topic.
At the moment this seems rather unlikely though. Graphene has very high requirements that FP cannot meet at this moment. Some things hopefully improve (FP has expressed interest in releasing Android security updates faster for example), some hardware related things might be more difficult to solve (what kind of secure element is there available to FP to build into their phones other than the standard Arm Trustzone that apparantly isn’t capable enough?).
Apart from that, I doubt whether the market for ethical, sustainable phones that are also privacy friendly and secure is really that big. I’d love to be proven otherwise though, if someone has done market research on that.
Understandably security isn’t one of the main things Fairphone focusses on, and it’s possibly one of the hardest things to get right, but I definitely hope it will become a priority at some point. If that were to happen then a collaboration with GrapheneOS could be great indeed.