The old dungeon rewarding system (1 piece of gear for every 15-20 minutes) was really good.
No need to give too many pieces of gear, if you don't want to see a crowd of players with completely identical gear & stats.
Water Shaman with Riptide + Water Shield + Erosion 1/30
- It's funny;
- More mobs around you = more damage.
- 10% chance to proc Blasting;
- You need some gear with Blasting stats & space in your vault for this gear;
- Low solo target damage;
- Bad healer for a party.
Since I have 95 lvl Sham and 90 lvl Priest, leveling as a Priest was much easier for me.
Speaking about world drops, Holy priest needs only 1 dropped skill for the smooth leveling - Smite. Other feats you can get from crafted weapon.