I Would like to suggest that at any point in time the Elders Scrolls should never include any kind of fire arm/ cannon / musket etc. Please do take this in mind that if you add such things ( Guns of any kind ) it will destroy the only good medieval Game company and it will destroy the epicness of the uniqueness of all the TES games forth coming. As I have taken into note that crossbows are being added to the new DLC for Skyrim, I do suggest strongly that you take the level to crossbows and only crossbows at the very highest (NO GUNS/MUSKETS/CANNONS).
Thankyou.
