As PGI has proved with two events in a row - the largest problem with CW at the moment is ongoing participation of the player base. It is not so much the existence of the CW Meta players dominance as it is the difficulty for the standard player to reach these levels with similarly competitive equipment. Changing or nerfing the Meta does nothing to address this larger issue.
PGI must be careful concerning changes in the CW economy. They have to make it easier for players to build working drop decks - this means more and better mechs faster, and they have to improve the reward incentives to transition players away from the standard games, towards the CW games. All this while, they have to do this without breaking the bank as far as real world income is concerned.
It is probably true that it is the existence of the Meta that is driving the new mech sales, as top players seek to find an edge over the existing hardware on the field. Restricting access to the Meta would threaten this income flow, and I doubt very much PGI is willing to do that at this time.
Edited by crustydog, 07 May 2015 - 04:20 PM.