I have the solution to all of this: Get rid of the cage**
Why? Well for one people won't be able to grab it if it's not there, but also, people won't be able to press their oppenent up against the cage for minutes on end**
How is using the cage to pin your opponent any better than grabbing the cage? If the cage can be used for offensive purposes, why not defensive?
Now, am I seriously suggesting that the UFC switch to using a ring? No, but it's one of the few ways to stop all the fuss over cage grabbing**