The game is currently on its last leg. If you introduce this new mechanic into MW that you released into KA...it will be the death of the game. You can't just nullify the long time players stats by issuing new code to try and rebalance the system. You can sit back and rationalize it all you want by promoting it as adding depth, but that is nothing more than a veil of deceit. Players have spent years and lots of money building stats to all of sudden realize they can't beat 50% of the players they used to defeat? Ludicrous!
Don't do it GREE. If you want to massively change a construct, then do it in a new game under a new title. Don't screw up MW like you did KA!
Our soldiers don't need any equipment. They don't need any crafting, recipes, nor any fusions. They don't need any new algorithms for waging war! Leave the game design alone and just fix the current issues!