The purpose of this mod is to make this game slightly more difficult as Geralt can no longer be a master at everything early on. You will need to focus on a few styles and signs in addition to your attributes rather than be able to use any style with high efficiency at any time. However, as you will get silver and gold talents a few (about 3) levels earlier, balance is achieved. Towards the end, you will also gain fewer gold and silver points than normally making the Epilogue at least a bit challenging for any build and thus a lot more fun.