Yes, absolutely. The previous system allowed factions which did not RP to a reasonable degree to continue to have the benefits of being an OF without putting in much work. This places greater expectations on OFs with benefits.
Are the requirements proportionate?
At this time, I'm unsure. What that relies on, more or less, is the devs capability and interest in actually helping factions perform the actions that they have been offered - those being story developments, events, and the unique rewards like the eventual flagship armor upgrade, the OF textures portion, so on. This also relies on the actual enforcement of the breaking of those OF expectations to be performed, and performed reliably. If that's the case, then I'd say yes.
Are the quarterly faction reports useful to the wider community?
I'm also unsure. There haven't been any great revelations through the quarterly reports, given to the wider community. I'd like to say the majority of OFs are open about their goals and interests, and a number of quarterly reports boiled down to, "Been waiting on events" and "Been being shot at a lot". This is generally to be expected, as I think a number of OFs have not really fully grappled with the idea of having large timeline plans to create actual story developments, as that just didn't really happen with the devs.
Are there areas for improvement, and if so how?
More transparency on the requests for events, between the devs, mods, and the OF 1ICs. As it stands, events through server plugins are one of the big ways harped on for OFs to further their stories, and I think holding those up or placing them behind a brick wall will stymie many plans.