Check my sig. Maybe the Dwemer were better mages than we thought
There were cannons in TESA: Redguard, a reference to cannons in Daggerfall, the Dwemer charges in Morrowind and the Daedric Landmines in Oblivion. It isn't too far fetched for something like this to be in. (Still... No damn guns. Ever.) I would prefer it to be something more like the DR mod for Oblivion where you could throw potions and the effect would splash and do an AoE of the effect inside. The only problem is it was super OP because while the radius of the spray got bigger if you held the throw button down longer, it didn't scale the effect down to make up for the fact that each enemy wouldn't get as much poison in them. So you could have a 20 point Damage Health potion and throw it at 5 people. Instead of each person getting something akin to 4 points of Damage Health (20/5) each one got the full effect.
I wouldn't mind seeing the Soulgem throwing in Skyrim either. Basically if you captured a Goblin's soul and threw that soul gem, it would shatter and the enemy would return in ghost form. It wouldn't always be friendly to you though so you would only want to throw them as needed. The last thing you would want to do is throw 30 soul gems and spend the next 20 minutes running from 12 angry rats, 4 fire Atronachs, 7 Daedroths, 6 Goblins, and one extremely vengeful Imperial Guard.