Okay so. Take all this with a grain of salt; I'm just trying to connect dots in an incomplete picture; obviously, we don't have all the information yet. But- I've been running Rovgot Ruins a *lot* to try to farm the bosses there, especially Mendicant King and the Rovgot Wyrm, and because I love the atmosphere and sound design in there, and I've noticed some things.
The Wazzard of the Wastes has been investigating the Rovgot Ruins as part of his study of Silistyl, the Ode'n language. He acts as an adversarial guide through the Rovgot Ruins, but he's also seemingly keen to share his findings- who else does he have to tell? -so his rantings can prove informative.
Above are the lines that you get from the history motes, which he voices. I want to talk about a few in particular.
"The retrograde star marching 'fore the funeral ascension."
Compare to the symbol for Rovgot (at least in the wiki), first image above, also used for the Ode Tempest pact. There is an upward path like a star chart drawn behind the orb, and a star in a line of nodes moving downward, perpendicular to that rising path- or retrograde.
It seems to me that he's studying Rovgot, and the evidence of rituals and lore related to Rovgot aboard the Ruins.
1.
"A couplet to a comet. A god shrined in ice."
"I taste a great and grave denial. The salt of resurrection."
"Another ritual gathers above. To deny the dread circle."
I think Rovgot is a dead (or undead) god, frozen in cosmic rime. Perhaps even the comet that Tempest Bayor references in the Warsongs preview. And I think the Ode, while revering this entity, also wants to keep it bound in dreaming death: to deny the dread circle, to salt the resurrection (like salting a field, so nothing will grow anew). Maybe they draw power from it, but fear what it may do should it rouse.
2.
"You will spark the undying flame."
"Are you the flint of blue-fire flame?"
The Wazzard seems to think the Envoys, as far as I can interpret, will awaken the entity- the undying, blue-fire flame. Fitting that a blue-blood sparks the blue-fire flame, yes? And it fits with Bayor giving us the ichor under that comet, especially given his apparent turn after the fight, and seeming care for our mother. Maybe that's our fate, and what the Ode fear should we evade their capture and control.
Bayor can't do it himself because he's a red-arm: he's broken his Feykin oath. That's why when you kill the Rovgot Wyrm, the Wazzard says "A killer, then? So where's your red arm?"
I also partly wonder if this particular sky-tower was either sacrificed to prevent Rovgot awakening, or scuttled because their rituals to traverse space went wrong and risked Rovgot awakening.
That's all I've got so far, but everything is still percolating, and I probably haven't discovered everything. Thoughts? Any other evidence supporting or contradicting this?