Just read through the quest and the vibes are honestly amazing.
My general thoughts on the narrative threads presented so far with potential reaches/conclusions
In the second vision it's mentioned that Myrmidia (eagle) stoppered the source of all things with her feathers which could correlate to the diamond plug we came across in the depths. The reason that plug is scratched is it's what the dwarves are trying to destroy and get past. There's also some semantic relations to "stoppering" and Ahalt because they're the god of drinking.
@Graf Tzarogy when Xenophon came across the pit during rat catching did he look up at all? If so did he see a hole in the ceiling? That would basically confirm that it leads to the ritual area from Petrification Day.
For Myrmidia's goals during the play it could be to convince the Princeps to change the goal of his grand ritual and either coopt it or change the end result. This is just based on the latest update where we get this quote 'Myrmidia gives inspiration for a play to Junius "to show her love" to the "heirs of Tyleus", meaning the Princeps and his line, which claim direct male-line descendance.'
As for the Princeps I'm convinced from the second vision and from the general bad vibes that he gives he's gonna try and do a ritual that turns him into the Great Horned Rat. He's collecting rats, has a sword that's actively beefing his soul up way beyond human levels, is in talks with the Nehekharan for tips with grand rituals, plus meta-knowledge that the Skaven are gonna be created. Don't know the symbolism with the rose from the vision so if anyone has any ideas that'd be nice.
Things I'm not sure about are basically all the symbols from the first vision, explanations for what's up with the mutant village + ghur wizard, who's collecting all the warpstone (dwarves?), what's up with the bones that have warpstone filled in them that are growing (moulder??), why the dwarf mines from ratcatching looked abnormal.
Threads to follow up on imo:
MOULDER just by virtue of the name has to be sus somehow
TOWER (obvious)
Nehekharan priest + maybe gods as well from the mention of Nagash in the first vision and recent collaboration with the Princeps.
Dwarves needs to be followed up on somehow
What the hell does the Princeps plan to do with the rats. Most obvious connection is they're used to juice himself but what are the implications of that and how does that relate to the ritual he's setting up.
More general vibe-reads
The quest will only last 13 turns (obvious)
The quest will go 22 turns (all the tarot cards)
There are literally 13 separate plots going on
Nehekharan gods are mucking about as well
We're gonna need to get the gazul priest sword that was dropped in the water at some point
There's a chaos plot going on somewhere as part of the gambit pileup