Quote Originally Posted by Khrysanth
As far as mechanics go, increasing the potency from "tainted" to "minor", and so on, make sense. What doesn't make sense is that many in-character concepts are tied to those terms, which I believe (thus being my opinion) should be reserved for the original potency of the bloodline. Those with "Great" bloodlines can trace their ancestry to those who were standing in the middle of the battle, while someone with a "tainted" bloodline can only trace it back to someone on the periphery of the explosion of power, people who were, for all practical purposes, non-combatants, injured, or fleeing.
In your opinion, can gods grow and ebb in power? That's a fundamentally similar question. There are numerous myths throughout many cultures wherein a godling grows in strength (eg Hercules, after completing the 12 tasks) or loses power (arguably the titans, to use Greek mythology again, after Zeus is born). The "Time of Troubles" Forgotten Realms novels even established that this can happen in a D&D setting, and the old D&D Immortals rules even allowed them as PCs.

Now, of course, to say that some cultures have gods capable of becoming more or less powerful is not by any means to prove that the Cerilian universe is automatically required to possess similar traits. One could use the example of Mount Deismaar to support either side of the argument, frustratingly: you could say that it proved gods can die and ascend (thereby establishing that gods can indeed change in power: dying is a pretty radical decrease in power, while ascension to godhood is a radical increase); alternatively, you could suggest that since the gods created on that day have not changed in power since, that the power level is in fact fixed (and merely transferable).

But if you accept that gods can grow or dim in Cerilia, then it seems fair to say that scions - who are, essentially, godlings - should also be capable of changing their power level.