I've actually been thinking a lot about this one for the conversion of one of my characters. He is a Stormlord of Thor (modified slightly to use hammers instead of spears and javelins). The world is currently being overrun by a storm created by a very powerful lich that raises all bodies within it as zombies and skeletons, and we are trying to find a way to combat the storm. Working towards
weather control to help push the storm back. He was very heavily into melee combat and blasting undead. I have a couple of different theories on this one:

Just go with straight cleric and into warpriest and use rituals to cover weather control, etc.

Start ranger, pick up Initiate of the Faith and go into Stormwarden at 11th. This gives me all of the melee might I want, allows me to do some healing and swap out for some good radiant damage powers, and I can still pick up the weather control rituals to round out the concept.
The main issue with option 2 is that I lose out on Channel Divinity. If I thought that I could get into stormwarden with Warrior of the Wild I would go that route, but the requirements on it appear to neccesitate starting as a ranger. Thoughts?
Edit: Now that I sit and think of the group dynamic in that game, I may have to go fighter with Initiate of the Faith, as I was basically holding down the defender role anyway. Group has a human warmage (very easy conversion to wizard), a human black flame zealot (which I and the player of that character have discussed, and his concept will be much better realized with a warlord taking Sneak of Shadows and either shadow assassin or straight multiclassing with rogue at 11th), a halfling scout (bow ranger), and a centaur hulking hurler (possibly the make or break in converting this game, any good ideas?).