Draconic Specialty Priests

[AuldDragon]

Okay, it is time to finally quantify what I'm planning for Draconic Specialty Priests before I work on any of the dragon deities. This method is a mixing of the dragon-priest class from Council of Wyrms and the Specialty Priest from Cult of the Dragon (which I find too limiting).

Dragons may elect to become Specialty Priests at any time during the hatchling age category, or upon achieving a new age category. That age category becomes known as the first age category. Subsequent age categories are called second age category, third age category, etc. All granted powers are given in terms of the required relative age category of the draconic priest.
Shadow dragons, for example, typically can first cast priest spells when they are mature adults, thus, they would have to elect to become a specialty priest no later than achieving that age category. A shadow dragon who becomes a priest at that point would reach the sixth age category upon attaining great wyrm status. Red dragons, on the other hand, can typically first cast priest spells when they are of venerable status. Thus a typical red dragon could elect to become a specialty priest no later than that. Upon becoming a specialty priest, dragons then begin utilizing the spell progression granted to dragon-priests in the Council of Wyrms campaign setting.
For example, a dragon starting off at hatchling could max out at "level (age category) 12," but if they started at age category 3 (Young), they'd max out at "level (age category) 10," thus missing out on 7th level priest spells (not necessarily a big deal, some of the more popular gods are Lesser gods anyway).

That is compared to the Cult of the Dragon Specialty Priest information as follows:

The age category at which a dragon first receives priest spells determines when it can become a specialty priest of a draconic power. This age category is called the first age category. Subsequent age categories are called second age category, third age category, etc. All granted powers are given in terms of the required relative age category of the draconic priest.
Shadow dragons, for example, typically can first cast priest spells when they are mature adults. A typical shadow dragon would reach the sixth age category upon attaining great wyrm status. Red dragons, on the other hand, can typically first cast priest spells when they are of venerable status. Thus a typical red dragon could never reach higher than the third age category, which it could achieve upon reaching great wyrm status. Note that in very rare cases, some dragons are capable of casting priest spells earlier than their brethren, and they can thus achieve much higher levels of proficiency as specialty priests.

On the other hand, re-reading this, it looks like there is an out that I misinterpreted before ("Note that in very rare cases, some dragons are capable of casting priest spells earlier than their brethren"); however, the doubling of priest spells* doesn't make a whole lot of sense in that regard, since we have no spell progression for those unique individuals (although it could be left to DM fiat). They could be talking about the Dragon-Priests from Council of Wyrms, I suppose; although that doubling of spells part would then make them reeeeeeeally powerful.

Thoughts?

Jeff

*Note, this part was separate, and I missed quoting it: "As with all draconic specialty priests, annihilists can cast double the normal number of priest spells granted to a normal dragon of their age and subspecies."