Would you like this mod to provide the necessary materials for forging a copy of Trueflame (with my specs)?
I'd prefer a different weapon as I've always thought of Trueflame as one of those truly one of a kind items. It will also prevent the Nerevar from attempting to kill you.
Do you mind Azura's Star looking a little... different?
Would rather see something more unique. Perhaps one of these http://planetelderscrolls.gamespy.com/View.php?view=Mods.Detail&id=9060 would work.
What about ambient noises?
You could replace them. I've always found the vanilla dwemer noises to be a little boring.
How difficult would you like the fight with the security system to be?
Somewhere in between I guess.
Where/How would you generally prefer the entrance to be?
Either on an island somewhere or on Solstheim. Solstheim also has a lot of untouched mod real estate as well.
In the end I'd still say to do whatever you'd prefer the most.