Way of the Ascendant Dragon Monk
IMHO Yes, likely connected to a dragon god. But not necessarily. Either way, lots of opportunity for role play.
Draconic Discipline: I like the idea of the damage type but my suggestion would be give the monk claws, and to have the claws do the damage type. and make the damage type additional and based on a chosen type of dragon. The Draconic Language is fine, and thematically makes sense. Maybe add a dragoncraft skill.
I think that the intimidation would do better and slow play less as a 1/encounter frightful presence. MAD but that's not terrible for a secondary ability. I would also give the optional rule that this monk qualifies as a dragon or dragonborn for racial feats, item use and the like.
Breath of the Dragon: I like it, but to keep up with Monk abilities, I say use ki points for the dice.
Wings Unfurled: I think it makes sense to give the monk a limited fly speed or a bonus to fly speed by spending ki points.
Aspect of the Wyrm: I would just go with a straight damage aura that requires ki to maintain.
Ascendant Aspect: Blindsight is fine and makes sense. I would do 10' like the half dragon. ongoing damage on your breath weapon say 1 point per die of damage would be nice and works for me.