I am a very casual player and I never really did Mythic Raids or was really good at Elite PVP. But I always really liked collecting cool sets.
I don't know when Blizz exactly changed designing Mythic Raid and Elite Pvp Sets to look a lot better than the normal raid or pvp sets (maybe since MoP?), but that was the moment I lost a lot of motivation to really do raids and normal pvp, because if you only do normal or casual content without a lot of time investment you only get the leftovers.
As I had seen the leaks of the new Castle Nathria Sets and PVP Sets I was amazed, because they all looked very similar without huge upgrades etc. The only difference between M+ and LFR, Normal, Heroic Sets was the different color tints. They all looked cool, but you could still distinguish the people who wear Mythic Raid gear from the people who wear Heroic, Normal or LFR gear.
But now they suddenly removed all the glowing effects and they still don't look that bad, but still not as cool and great as before.
Why does Blizzard always have to design the lower sets worse than the Mythic Sets? Why don't they increase the glow effects for each level (LFR, Normal, Heroic, Mythic) instead of removing every glow effects from anything other than Mythic Sets?
I liked the systems better with Wrath where the only way to distinguish Heroic and Normal Sets from each other was the color and not a completely upgraded look who makes the other version simply look inferior in any way.
I really don't understand why Blizzard had to remove something which already existed for the armor models? Or maybe they are designing ways to upgrade the gear to add the glow effects again?