Think about it. They've stated specifically that they don't want the game to be P2W. Okay, so any Hero mech the release must then be, at best, perfectly balanced. But perfect balance, although a noble goal, is never a truly feasible goal - in any situation, one mech will always perform slightly better than another, even if that divide comes down to personal preference. If there's even one player who plays better with the layout only available for real money than one available for free, then the mech must be considered P2W, at least for that one player.
So, assuming this is accounted for, all mechs then must be at most balanced - which means that they must be less than balanced, since complete balanced isn't plausible. This means that players who only choose mechs for their strengths will no longer buy these mechs - if they only play the best, why would they play a gimped Hero mech? They aren't competitive, so no reason to. The only reason would be for the C-Bill boost and skin, and only people who buy it for those reasons are the ones who will buy it in the current system. (Or people who just want to collect all the hero mechs, but they would buy it anyways, so this is a moot point).
So, there you have it. By making money-only variants that are specifically not intended to be P2W, they are actually costing themselves sales.
All hero mechs should have free variants without the unique skins, boosts and backstories. If they want to create a new variant to do so, that's cool, but making a completely new variant which isn't available for free? That's just asking for problems in the games economy.
Edited by Tvae, 24 December 2012 - 12:25 PM.