Cornerstone LPA questions

After reading through the cornerstone LPA I am still a little confused on a couple things that I feel like this community can help clarify for me:


  1. How does the LPA hold the GP to stick to the fund's thesis and not deviate from it? Is that possible or should the GP have some flexibility? 
  2. What should be left out of an LPA or is inappropriate to include in an LPA?
  3.  How do taxes work in a GP fund? Like what taxes are paid on interest earned by the General Partner before being distributed out to the LPs?