nothing stops you to jointly make a PoB with the opposing faction using FL ID etc. in a contested system, make RP, build history, get custom model.
And then ask Admins to have an event for who takes control and then keep fighting for it. Eventually possibly even making it a canon.
Heck you don't even need Admins - make a PoB with joint effort between e.g. BAF and Coallition using neutral IDs to haul, split costs, agree that at X damage in X time it swaps sides, if damage is not done, defending faction keeps it. Build enough back and forths and story that devs would have no choice but to consider it canon eventually since both Faction OFs agreed on it, made it jointly happen, set the terms and fought for it
This is very simple, you can start right now to work on it - all you need is a joint effort between opposing factions to create something new together, very straightforward and easy to implement, needs no staff approval and just some admin effort if you decide to go the way of plugin events for initial holder of the base decision - good luck!