hello, i was thinking about how awesome it would be if my dragon born while a werewolf or vampire lord (as in in the forms) could instead of using one of the howls or night powers could use one of the shouts instead. obviously this isn't going to be added to the game now that Bethesda is pretty much done with skyrim but i was wondering if from a lore perspective this was even possible and thought you guys might be able to help me out.

I'm not sure why it wouldn't be possible to do as a vampire lord, but I don't think you could in a lycanthropic state. I'd figure that your vocal chords would be completely reconfigured, making it impossible for you to actually Shout in such a state.

Then again Siding somehow manages to talk when transformed...

Depends. Few Werewolves have control over most of their faculties when transformed, so talking for the most part would probably be out of the question. As for vampire lords...well, eh, they have crazy powers of their own to work with, and are probably more natural for them to boot.

I'd be tempted to say that the Daedric taint of such bestial transformations renders the being in question unable to use a Shout, but then that might mean that Dunmer (and maybe Khajiit) wouldn't be able to shout either.

(I wanted (but never got around) to make a mod that replaced one of the werewolf howls with the Dragonrend Shout. It would have allowed for sustained beast-form combat, even against dragons. I find it thoroughly irritating that you are all but useless against flying enemies while transformed.)

to Dargor, but it would technically be possible just perhaps not as easy as when the dragon born is in their "human" state to shout as a vampire lord?

to Rob the Bob, but if the deadric influence prevented the dragon born from shouting wouldn't that also mean that the dragon born might not be able to shout in their non beast form as a werewolf or as a normal vampire? or would it just not be as potent in the those states.