The only real differences between melee and ranged...

You need to manage the IWT/CTM for melee.
And as a caster, you're limited by your mana.

If you don't want runners, push your IWT key once.
Wait for your toons to get close to the target.
And then you can spam, and it won't cause any movement, until the mob moves.

Then again, caster mana is less of an issue for a Druid because of Innervate.
And with five casters, you effectively have 5x the mana regeneration rate.



I personally found 5x Druids to level a lot faster, as Feral, than any other comp I've ever leveled.
But I can see the attraction, to playing casters... they're slower but easier too... just face the right direction and Starfire x1 or Wrath x2 (with 5 toons).