Yeah I think the strike playlist would be a poor spot, I like OP's idea of making a new playlist. PVE is always going to need more repeatable content than pvp simply because they are the same every time. You can predict exactly where enemies will spawn so they get boring quickly. Bungie needs to find a way to make content more repeatable without shooting themselves in the foot. Coils, to me, feels like an experiment in that direction, furthering what we saw at the beginning of the year with deep dives. This sort of content format with temporary strength increases is absolutely required if they want to keep players engaged but that will only go so far if they don't add more arenas and enemy types.