Do you want this story get added with a crossover with the Halo Universe or just finding the Warhammer Universe and I will lay out on what will happen if you choose ether of these
If you chosen the Warhammer Universe you will find that you are related to the Primarchs as there lost order brother and with more added troops and machines to your army's and possibly other ships
If you chosen the Halo Universe you become a super power where nothing really changes
