No. Normally I'm not this type of "gamer", but if guns are added to TES then I refuse to buy it. Guns do not belong in TES. They simply do not fit in a world of magick and swords. I can only see disaster from adding something like firearms to the TES world.
*cough* Fable 2 *cough*
You know, guns aren't the problem, its how they implement them (first off though, I want to make dang sure everyone knows i am 100% against guns)
But just to play devil's advocate, again, the problem isn't guns, its the fact that they aren't realistic. Fable 2, Assassin's creed, any game that has added guns to what was fundamentally a sword and sorcery type game has been guilty of making the guns more like modern guns, not like actual flintlocks and muskets.
Even by the time of the civil war, if you could reload a single shot into your musket in less than 1 whole minute you were breaking world records.
So if guns were in, again, like say a flintlock, it'd be good for stealth gameplay because you get ONE good armor piercing round out, but then you have to wait til your out of combat to reload, or more realistically have a minigame pop up when reloading that takes at LEAST 30 seconds to do, that way guns would be plausable, realistic, TOTALLY not a game breaking device, and still be worth it, again, at least for stealth characters.