Everything can indeed be viable in 10 concidering the stats you'll get, but imo druids can be really fun since you get so many spells, sick healing (resto), 25% speed increase in cat, lots of hp in bear and huge starfire crits in balance. They also got roots.
Smack 40 hit chain to your weapon and you can easily win duels against dps classes upto lvl 30-40 (If you're BiS). You can also solo mobs in outlands / northrend with roots / starfire switching ^^