Can anyone ever see the Daedra wanting to corrupt Dragonborn, to exploit and manipulate him/her in a similar way as the Sith wanted to do to Luke Skywalker? If so what could they use him/her for? I personally could see Dragonborn being a powerful weapon for them in some way.

No more than they have done with my characters for the last two games. Besides, you probably wouldn't be taking a task from a Deadric Prince of Oblivion, on the same level as the simple quest to deliver spiced dog meat to the guy who sells dogs in Markarth. You take those quests, you know what you are getting into.

Oh, sorry, I'm talking about RP and extra plot outside the vanilla game and dlcs.

While fun, ultimately irrelevant, as that is beyond our power and rests firmly with whoever controls lore and storylines at Ol' Bethy S.

Er, this might sound strange but what do you play on? Is it PC or console?

What could they do with an immensely powerful pawn...hmm.

There's an actual very good reason I ask this question about the Daedra using the Dragonborn.

I'd first have to ask how you feel that is in the least bit relevant.

Don't some of them try to get you to be their "Champion" in the game already?