What changes would you like to see in 4th job skills?

Bowmasters weren't made for close combat to begin with nor mobs. They're one-on-one-from-range class. Mages are the perfect alternative, and are only made for mobs. Thieves and most warriors are all-round, with both having advantages and disadvantages at some places.

Compared to most, if not all other mob skills, avenger is pomegranate. Have you ever played a hermit, and I'm not talking about private servers with perfect 10%'d pomegranate, 50 rebirths and supplying your own SE, Holy Charge and Combo all-in-one doing 3,000,000 damage per avenger hit.

Avenger. Is. pomegranate.

The only time I've ever seen Avenger used effectively was at Gobies, and even then, that wasn't a Night Lord. It's relatively slow, weak and has an odd area of effect (basically, straight in front of you).