What makes a cool Wc3 Ranged Unit Projectile?

[nhs325]

So, this probably not a regular question so be prepared.
A ranged unit projectile its the projectile that the unit shoots out to damage enemies. It could be modified with orbs.
But something annoys me abut how they look. some are really lame.
So what makes a cool projectile?
Is it.....
Low use of file?
High poly?
OR simply cool?
I'll choose all.
So what about you?