Personally, I think any arc that tells a thought-out story, does so without suffering from grievous continuity, mechanics, or grammar issues, and clearly shows that the author's made sure the finer things are in-tune (like level range) is eligible for 5 stars. I don't much get this whole 'I don't like these kinds of stories' stigma that some people seem to hold.
"If I had Force powers, vacuum or not my cape/clothes/hair would always be blowing in the Dramatic Wind." - Tenzhi
Characters
I've been racking my brain for days trying to think of something epic and 5 star worthy but I can't figure out what makes a good Arc
I know there is no set formula but what (In your opinion) makes an Arc 5-star worthy?
Volt Sentinel Reference
Thunder is good, thunder is impressive, but lightning does the work.