Quote Originally Posted by Troacctid View Post
Dragons are interesting because of their special weird rules for aging. If your character survives for a couple years of in-game time, they might suddenly find themselves forced to take additional racial hit dice or LA before they can continue in their class.
If I was DMing, I'd let the players ignore that if they didn't want to deal with the hassle. If they were fine with changing that kind of stuff, there are rules in the Draconomicon for that.
Either way, I think it's fine to just judge each age on its own merits without worrying about the possibility of PC dragons getting extra complications as they aged.