I have a question and I’m not sure if its been addressed or answered on here yet. If you kill the jailer for the week, because there is no tier in his loot table, does that lessen the chances of you getting a tier piece in your great vault on reset? Basically, if you want to maximize your chances at getting tier from the raid in the great vault, should you only be killing tier bosses?
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I’m not actually sure killing a boss grants access to that boss’s loot in the vault. This week I got tier shoulders in my vault but we did not progress past Anduin last week. However, if the last two bosses drop higher ilvl in previous raids, do they need to be killed to put those into your vault loot table? Now I’m actually less certain than I was when I started writing this post.
Ugh, I feel like this is one of the most freaking unclear systems WoW has ever WoW’d…
>.<
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I found this…
- Raids: The item level of rewards in this category is based on raid difficulty. You can unlock better loot by defeating bosses in Sepulcher of the First Ones on higher difficulties. Loot from the first 8 Sepulcher of the First Ones bosses will always be available whether you killed them or not. Loot from the last 3 bosses (Lords of Dread, Rygelon, and The Jailer) cannot be obtained unless you kill them once. Skipping Rygelon and killing just The Jailer only adds the Jailer’s loot to the Vault table.
(https://www.icy-veins.com/wow/great-vault-the-shadowlands-weekly-chest)
So yes, you would be correct. Killing the Jailor does decrease your chances of getting tier in your vault. Note that this would only apply to the Jailor himself, as it looks like the last three bosses only add to the vault loot table each week after they’ve been killed. The loot from the first 8 bosses is always available in the loot table, even if you only kill a single boss from those 8.
Yep, super straightforward! 
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Not that it helps much, because the vault unlock from killing a late boss (which is there because they drop higher ilvl gear and Blizzard wants you to have to earn the privilege rather than possibly be able to get the primo items just off farming the easy pickins) is permanent.
In other words, if you’ve killed the Jailer once, his loot’s gonna be in the vault table forever (well, at least for the rest of the season, anyways, but …). So the only way to really game this would be to deliberately forego clearing the raid on a given difficulty (which would mean skipping AOTC/CE, too), which is kinda silly …
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Thanks everyone for the replies. That definitely helps clear it up for me.
IIRC, the wording there in the quote isn’t about an each week calculation, but a once forever calculation. You need to kill a boss like Rygelon once ever for his loot to start appearing, but simply being subbed out from that point on on any given week won’t actually remove his loot from the pool, you’ve already “earned” the right to his loot.
Yea, you are correct. Sakimayu also noted this also.
I know that it says this, but I got the tier chest this week in my vault and didn’t kill Rygelon. I got the normal raid 259 version too, not the upgradable pvp / m+ version. So I’m fairly sure that tier will come regardless of the bosses you kill, perhaps that is just for non-tier items.
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So let me get this straight…
You’re telling me the confusing and unintuitive vault system is even more confusing and unintuitive than we thought based on the information I could find?
Thanks for posting!
(Haha it may come as a surprise to you all that I think the vault is kind of the worst…)
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Don’t get me wrong, I love the vault. Compared to the loot chest we used to get and the nothing we got before that, it’s a great form of bad luck protection so at least you get SOMETHING by the end of the week.
Technically speaking, the Vault isn’t just comparing to the loot chest, it’s acting in the same combined capacity as loot chest, Coins, Titan Residuum, Emblems, Justice/Valor and all other forms of bad luck protection or currency we’ve had in the past. Whether it’s better in that context is a bit harder to gauge.
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I don’t really see RNG layered on top of RNG as an effective system for player agency. Having more random choices seems nice, but in the end you usually just end up with a lot of stuff you don’t want. I get upgrades too, but I much more enjoy getting currency that I can trade for direct and targeted upgrades.
Badges/honour… heck even the residium thing from BfA. Anything that lets me collect and then choose. Chasing vault rolls has been very, very dull. It’s a good thing I genuinely like running dungeons I guess.