That would be super cool and with your themes Fovos the Observer and Silicrilia the mother of secrets you could be the god that looks to the future and goddess that looks to the past keepers of knowledge both past and future magical and mundane
Edit: Fovos could use his theme of the Observer to be all seing possibly when he has enough power
Well, Fovos would probably hate being omniscient but I can see him investing in divination and forms of information gathering. He's a lot more about the discovery of knowledge and the unearthing of secrets rather than simply knowing things.
There a lot of thematic overlap between our gods.
Spark and Fovos are both about guarding and hunting. Fovos however represents the emotions that inspires people to guard and hunt, rather than the acts themselves. He's probably associated with those acts by some but only because they are the center of the current society. It'll probably change as society becomes more advance.
Scrios and Fovos both hold the belief that mortals must face strife to thrive, but where Fovos is the god of the soldier, the victim or the human side of the equation Scrios is all about being the war, the storm or the calamity himself. I can see this duality lasting for pretty much forever.
Thana and Hella guide both the living and the dead. Fovos does too, but he's more about guidance in general and probably cares far less about individual lives than those too. They seem to really care about their children, whereas while Fovos may care about a particular individual or of society in general, he doesn't care about
every individual. He's definitely no mother.
There's also the overlap between Fovos and Sapienza. Both are gods of wisdom and discovery, but Fovos is more a god of facing your fears and moving beyond them, with the discovery and wisdom being the reward for that.
Raudeath overlaps in a similar way to Fovos as Thana and Hella do. Silirica we've covered and... Lilith I think there is actually very little overlap as far as I can see. There is vaguely similar
Overall, I look forward to seeing how things develop as the game goes on. There is a lot to play off of here.