Hmmm, I think the dwemer centurion is perfect as a big daddy with a few adjustments. First, as dragonarei said, to change the name to something more lore friendly. Secondly, you can shrink the dwemer centurion (which I know is possible since someone has already made a mod that adds pet dragons) and make his combat style more aggressive and make him attack faster. Thirdly, you can add sound effects, like an ominous scream of a big daddy or some metallic creature that has emotions, whenever it attacks or is about to attack. Such a mod is possible, and I'd be willing to help with scripting stuff if anyone really wants to undertake this project.