In regards to natural competitions :
Natural bodybuilding is a great thing and gives you a healthy, strong and fit body BUT natural competitions are boring.
I don't want to see some fit but small guys and pay money for it - nothing impressive about a natural esp. when put under stage lighting.
No wow-factor , nothing .. I've seen bodies like that a hundred times before and see a better one every time I look in the mirror so why would I pay for that ?
On the other hand IFBB pros are huge , impressive and you don't see that kind of muscularity very often. Even if you're a juiced up gymrat you're not close to that size - it's something special to be that big and it is what the fans of bodybuilding want to see.
That's just my opinion about REAL natural shows - of course Musclemania and co. don't count as people competing in those are about as natural as most NPC and IFBB competitors.
True natural at 6-7% bf will look small and stringy on stage - there might be some exceptions to that but certainly not enough to fill a contest.