This just crossed my mind, but the answer could be donation.
Remove the 200 post limit.
Only the donators could access the media section.
Or it would be donators + members with 1000+ posts, so the old members won't suffer from this.

200 posts can be reached quick, but if the limit is like 1000, the new members could use the donating option if they really wanted that media. And that way it would help the admins to keep running the site.
So what do you guys think? Too harsh?