I agree that Raid ID is outdated, but the loot system is as well, I even made a post about it. There should be a review on Raid ID + Loot system to make it more efficient and less “save or suck” every 3 days based on the random players you end up playing together.
Maybe change to a per-boss Raid Lockout + Individual Loot would resolve the issue. People would get the loot from what they kill regardless of raid leader / loot distribution, and it would also solve the issue of people not wanting to have too many of the same class.
The post I mentioned: Ninja Wave! Make Raid Loot Individual!