I'm just here to suggest a few changes for RDD. I've really been wanting to play one but the class requirements feel a bit restrictive for what you end up with. I understand that its supposed to be a roleplay heavy class. On paper (and according to the stats it gives you) it's an extremely powerful class. I think the requirement of having it be a prestige class is good and all. But I feel like it could be expanded and changed a tad to maybe add more flavor to the over all RP of the class.
Move it to a greater reward BUT give it a base RPR requirement of 30 across the board, Kobold or not.
Remove the +2 CON and +2 strength as a bit of a nerf for the reward tier change
Add other spontaneous charisma casters to the list of available pre-requisites: Favored Soul, Warlock, Hexblade. Heck maybe Hemo/ Elementalist. Perhaps Paladin if they are worshipping a member of the Draconic Pantheon and have a Greater Oath.
These are just some things that were spitballed around it really feels underwhelming for as much effort as it takes to get a major reward for a prestige class.These changes would take a small bit of overall power out of the class, but it would make taking 2/3 of your available classes to spec into. Again, while I understand it's more about Role-playing, it just seems strange to me that a major reward can also just, get grabbed by someone playing Kobold(I mean with an RPR of 30, but still). In terms of builds and build variety it just feels stagnant and extraordinarily limiting.