What do you look out for when main-ing a character/class/job?

I mostly just look for something to keep me engaged in the fame. That's why I liked the old-school buccaneer and the skill chaining iFrames. This is similar to why I like Hayato (but because I'm a pirate die-hard, I'm not into hayato as much). This is probably why I'd enjoy the new thunder breaker. I was kinda hoping that the RED revamp would give buccaneers something similar, but to no avail. At the least we got a mobility skill that doesn't involve walking.

I'm also one of those people who likes playing the not played classes cause people think they're weak on the game damage charts. Underrated stuff is always fun to play because then people know you're weak and dont expect much from you.