This is to let you all know that the MC will change the events of halo 3 but there's something that I want to ask do you want me to find a way to prevent Cortanas Rampancy or do you want it to stay as part of the plot I am asking because if I find away to fix it some major things change like the whole of halo 5 and infinite so i am leaving that to all of you.
Also on order to facilitate the MC being able to impact the plot of Halo 3 the system will give a grace period to allow MC to start his faction and grow to a size in which he can actually fight against the enemies this does not mean a time skip I will be showing the events of the grace period and it does not mean untill he so powerful he is unstoppable what I mean is having a fleet that can actually fight and a home base that has a population to act as a home form the MC and his faction do note that I will not just give a planet full of people that would just be pointless and the people would hold no loyalty to the MC so the planet he gets will be uninhabited or abandon i am thinking of using Harvest for those who know Harvest was glasses by the covenant but still remains intact just it's environment is destroyed and with the systems help it could be restored so I hope you like this idea.
As for the events of halo 3 they will start the same of the game but the MC will intervene changing a few things to make things better that's why I asked if you want me to solve Cortanas Rampancy or not.