Joraga Warcaller maybe?

I would use 4 Gilt-Leaf Palace just for those extra swamps as well as Collected Company which is very standard card for green-black modern elves

MRDOOM3: I considered Joraga Warcaller while I was putting the deck together, however I found that for maximum effectiveness, I needed to cast him for 5 from my hand, which isn't always ideal especially when I might get him off of a Collected Company or Genesis Wave

mtgpauper5: The deck already features 4 Collected Companys. My only worry with having too many Gilt-Leaf Palaces is that I need to reveal an Elf or it comes in tapped. On the off chance that I don't have an Elf in hand or only have an Elf I don't want the opponent knowing about, I'd rather have my other dual lands instead.

Elvish Guidance for a big mana boost. Don't rely on just creature abilities for mana. In my deck I have 3 options- a land Gaea's Cradle, two enchants Elvish Guidance, Weirding Wood, and several creatures Priest of Titania, Elvish Mystic, Birchlore Rangers, Druid of the Anima.
There are cards that remove creature powers or kill target creature, just as there are cards that destroy lands or enchantments. Having your opponent need to do all 3 to stop you is helpful.

I do like your Elvish Archdruid though, more mana to get out than Priest of Titania but with the +1's your elves are tougher against global damage.
Do I go for both? Endless mana :-D

orranis

Most of those cards are not legal Modern, but I'll definitely keep Elvish Guidance, Priest of Titania, and Gaea's Cradle in mind for if I ever want to convert this deck into Legacy.

Small update: I recently ended up going with mtgpauper5's suggestion of 4 Gilt-Leaf Palaces. The deck cares way more about getting that turn 1 and 2 land drop for early, low-cost Elves than late game land drops. Because of this I upped Gilt-Leaf to 4 and removed Woodland Cemetery, which I had 2 of before. I'd much rather see a turn 1 Gilt-Leaf than a turn 1 Cemetery!