There should totally be a fire elemental of the Sudaruska sword, instead of being a shattered sword being held together by light, a pillar of brimstone held together with magma. When you hit the ground with your charge attack it does a fiery explosion, igniting enemies too close. I mean there's already the Triglav, ice elemental, so why not fire?
Triglav isn't elemental- both Sudaruska and Triglav are normal damage type swords.
The divine avenger (http://wiki.spiralknights.com/Divine_avenger) has the attack pattern of the Sudaruska and Triglav, with elemental damage, and is considered to have a better charge attack.
My impression of the triglav is that the "mass freeze" effect is the main appeal of the item- I think people would generally prefer the ice version to the fire version, but most people who buy swords in that line are more interested in novelty than function anyway.