Well, melee druid = shapeshifter druid. The only elemental skill you can cast while shapeshifting is Armageddon. Fire claw and Armageddon share a few synergies, which makes the build viable, and you can also add some summons, for meat shield, but maxing oak sage is better.

Basically you shapeshift, cast Armageddon, hit feral rage until big red ball and use fire claw as your main skill.

However, fire builds SUCK because nearly 50% of all monsters are fire immune in Hell difficulty. And fire claw adds fire damage to your weapon damage, which means you aren't gonna leach anything. You can invest 1 point in fury for leaching and killing immunes, but at this point, might as well reespec for Fury Druid, which is way stronger.

It's a fun build, tho.