Warpfire Thrower
One of the deadliest hand-held weaponry in Clan Skryre's arsenal, this weapons team has within their possession an extremely potent and dangerous piece of machinery. The Warpfire-Thrower is a very crude hand-held flamethrower, that showers their foes within a whirlwind of greenish flame, fuelled and fed by warpstone substances. A regular weapons team requires two Skaven to operate, one would hold the container and gear, while the other holds the muzzle of the gun and directs its fire. So dangerous is the Warpfire-Thrower in combat that it would eventual lead to the death of the weapons team, as the deadly but imperfect machinery will sometimes melt down and explode, causing death to the team and all those near them.
Poison Wind Mortar
A form of mobile light-artillery, instead of hand-throwing the Poisoned Wind globe at the enemy, a projectile launcher strapped to the back of another Gobladier fires the globe while another Globadier loads the ammunition in. The mortar will lob the globe at a longer distance than any Globadier could, giving the weapons team both range and mobility needed to support the troops.
I'd love to see all the crazy inventions of the Skaven. I chose these two because they seem to have been removed from the Skaven roster (they don't appear on the Games Workshop site), which is a shame. I'd like them to bring back all removed units, for all factions.