To follow up my previous post, now that I'm back at my computer: one idea that comes to mind is figuring out a GDS (or OAG?) to purchase the data from on a periodic basis. Crowdfunding that sort of thing is probably impractical, so it'd be up to the collective user body to step up and pay every so often. I haven't researched this option at all, so it's quite possible this would not be feasible.