We've all been there. You made an awesome spell that hits units for lots of damage, slapped Abilities\Spells\Other\Stampede\StampedeMissileDeath.mdl on them and now they bleed all over the place as the spell tears them to shreds. Then you realize some of the units might be catapults or something. How can they bleed when they don't even have blood?
Well, I would like to ask to fix those issues anyway. Just because Blizzard did a very funky job making these models does not mean you can not fix them.
Also, you might learn something making them better.