You don't need 10. There are two in discussion that would greatly cripple wormhole life.

1. Removal of ABC ores. As you may or may not know. wormholes are also null. More like deep-null with -1.0 sec status. As a result, wormholes have ABC ores. These are required in wormholes for the primary reason of T3 construction. You should, hopefully, be aware that minerals are required for the gas processing that goes into T3 components and hulls. Due to the logistical difficulties of moving large quantities of anything to and from holes, taking a required component from them would greatly and directly affect T3 production resulting in, without doubt, greater prices for Tengus, Lokis, etc. as some corps would give up bothering while others raise prices to cover the additional expense and headaches.

2. Removal of Ice from high sec. Ice. We love ice. We need ice. One thing wormholes don't have, though, is ice. Our pos' are dependent, like all are, on the fuels obtained from ice. If ice leave high sec, this will directly nerf wormholes by causing a significant increase in the cost of the fuels. As a result, smaller corps will find they can no longer afford to maintain their pos, while larger corps will need to find ways to offset the fuel cost hit. This will, undoubtedly, affect once again the one thing that wormholes do produce that no one else does... T3 ships and components.

It's simple to see, when you step back and look at the different areas of Eve and how they interconnect (as opposed to focusing solely on null, or high sec, etc.) how these changes would result in negative effects rippling throughout the game. The sad part is... they would do nothing to get people into null sec. People that prefer a wormhole frontier style life want nothing to do with the mega-alliance mafia style null sec lifestyle and visa versa. High sec folks like their game a little safer, a little smaller and are happy with the lower risk/reward style they're accustomed to. There are four sandboxes in Eve... high, low, null and Anoikis. If you take the sand out of any one box, people won't decide to go play in a different box. They'll leave their empty box and go home.