I understand a lot of people are upset about the lack of multiplayer in Sekiro. However, bashing each other, whether casul or Meta, is not going anywhere. I don't think summons should be in Sekiro; It would break the game and make it too easy. However, I think a PvP setting outside of players' worlds, like undead matches from DSIII, might work. It would not work exactly the same, but it is a groundwork. You might even have "allegiances" (covenants) that affect the PvP. Maybe Isshin asks you to help the Nightjar Ninja, or you are bribed by a wounded easterner in the endgame. What we need are ideas, not complaining. Maybe we can satisfy everyone.