If the license engine, only CryEngine3 or better. He has great opportunities with the lighting. Although it has its drawbacks, as high prices and restrictions that Crytek is being hidden.
And yet, the price of licenses for CE2 to the line is not voiced, but I read somewhere that something around 100,000 € for the Package (but could be mistaken). But this price need to add license fees for the universe BattleTech, as well as the brand "MechWarrior", plus fees and litigation due to copying Mechs of Macross, and much more %) I think there need a lot of money and resources. So it's not a good idea.
But you can always donate money for the pies, ale and coffee for developers MWLL. They also want to eat. So let us better support them on a straight line without any intermediaries, for what they are already doing.