I'm a bit off CF nowadays.
I need some elaboration.

Did I get this right?
If ragers are in power it is good time to roll a rager, because your powers will work very well. And it is bad time for a mage because his skills will be crippled?

And if mages dominate the world it is good time to become one of them because your powers will be at the pinnacle?

Tell me that the Neo-Nexus is going to kill mages or ragers ( depends who is in power now )
or I will agree with Shadowmaster... that is the dumbest change in CF for years }(

For the class-balance purposes I would implement different scheme:
When there are too many mages their power is crippled ( magic power is divided between too many individuals bla bla bla ).
And when ragers are in power, every new mage get some boost to his powers.