Huh. Cool. Just remember, you also get skill upgrades from level-ups; make sure not to neglect those.
Here's what I PM'd to Dark:
Level 8:
1st level skill - Steadfast Luck. Aaron's rolls and roll modifiers cannot be altered by external skills. (In other words, "Lunatic's Luck" wouldn't be able to cause Aaron to roll an automatic 1, and that guy that inverted our bonuses would not be able to do so to Aaron. That said, he also can't take advantage of skills that cause him to auto-roll a 5 or something, not that he necessarily needs it.)
1st level upgrade - One with the Dragon (upgrade for Dragon Form). Dragon Form becomes Aaron's default state. Essentially, the skill Dragon Form (along with its prior upgrade, Fearsome Countenance) is removed, becoming a permanent effect. If possible, this would also reduce the cooldowns of the other Dragon Form effects, as it's a smaller shift. This would also make Eastern Dragon's Luck constant, as I would be perpetually in a dragon form.
Level 9:
2nd level skill - Rightful Ruler. When enemies first see him, they must make a roll to save against submitting to his will and rule. Presumably, either 3 or 4 and up saves.
2nd level upgrade - Unrelenting Storm (upgrade to White Dragon's Heritage). Any use of this ability automatically works, bypassing rolls. This includes both passive and active uses. However, the damage dealt to any one enemy cannot exceed 20 damage per turn.
Level 10:
3rd level skill - Warrior Messiah. Every time Aaron kills an enemy, every ally in the area gains 2 faith.
3rd level upgrade - Verdant Entourage (upgrade to Green Dragon's Spirit). Aaron is perpetually accompanied by two ents, who are now the ones with the abilities associated with Green Dragon's Spirit (Aaron no longer has it). Whenever one is killed, a new one rises within 3 turns.
Subclass upgrade - Draconic Ascendant. More than just a ruler, a Draconic Ascendant is a god amongst dragons, with the powers associated. Aaron specifically would become the draconic god of luck and battle, able to bless and curse allies, enemies, and equipment with alterations to their luck and the amount of damage they can deal. He would also receive any other boons associated with godhood.
The only thing that got rejected was the subclass modification; you can see the level 8 and 9 stuff in my sheet.