I've got two in my games. Each played by relatively new players, and each relatively low level.
One has carefully themed her druid so that all non-beast attacks are area effects. Beast attacks then preference single target effects. This seems to work out for her. The upshot of it is that her area of effects don't deal a ton of damage, but have a lot of control, while her beast attacks deal solid damage.
The other has a more organic build. She launches a lot of Storm Spike, and only shifts to beast form if something happens to encourage her.
Both characters do alright, although I have to think that they'd do better if they did a little more hit and run. First round, shift to beast, attack an isolated foe. Hit it for damage. Second round, hit it and slow it. Shift back a space, and disengage. Leave the foe more than 6 spaces from your allies, and travel more than 6 spaces, and the foe loses a round of combat. Stuff like that.