Raids feel like an absolute waste of time, and so do M0s for that matter.
You have opened the genie bottle with delves, where at least each run can guarantee you a piece of loot. And now you’re nerfing them because people like closer to deterministic rewards instead of fixing your raid loot.
A raid takes well over 3 hours to go through, with significant organization and dps/heal/mechanics checks.
And for a clear of normal Nerubar, you are rewarded with crappy 590-603 loot. If you even win anything rolling against 10+ people on average.
Heroic has even tighter checks and unforgiving mechanics. You get 610 gear.
Meanwhile you do your 4 weekly T8 delves and you come out with high end normal raid tier loot and your vault is giving you 616 ilv loot. For less time investment and organization. And the loot piece is guaranteed, even though by the Blizzard special they may screw you with 3 capes in a row.
DO NOT NERF DELVES.
LOOK AT YOUR REWARDS SYSTEMS FOR THE OTHER CONTENT. THEY SUCK.