I'll be honest I haven't played a Shaman seriously since Legion but I could already see the issues with throughput even back then but I still felt like the spec had a place in a raid for other than its CDs. Now Restoration for Ny'alotha is a contender to be brought in but only as a DPS healer that is only there for the cooldowns. I'm sorry but wtf I've always known the mastery to be a completely pos but this is insane, no healer should only be brought for just the CDs ever and to be relegated to just DPS is insane.
How the hell is Resto Shaman meant to come back from this, the spec is going to need a complete rebuild before Shadowlands.