Highschool DxD

What if Vali had the Boosted Gear and Issei Divine Dividing?

Perhaps Issei's older siblings had not been miscarriages?

Could it be that Miki or Gorou Hyoudou knew about the supernatural part of the World?

Maybe Great Red used his power over Dreams to warn his past self?

Is it possible that Raynare actually wanted Issei as her boyfriend?