Oh yeah, I wasn't implying it was a marketing scheme or something. I understand how huge all the downloads would be if you had to download all that data every time. Even if it were a marketing scheme, it's your decision as developer what to charge for what.
Is there any chance you would make the common data available on the website for members? I don't think I can justify spending $150 just to get the AC130 mission that I've been dying for in MP #9

I'm not saying I know the specifics of all the logistical problems involved here, just throwing out ideas.