3 games yesterday.
1 - 0 against Shattergang Brothers goblins. He had a bad draw and I was way too fast.
2 - 0 against Mayael the Anima. Almost lost to Archangel-beatdown and Crater Hellion sweeping my board. Saved by Death Cloud.

My deck was quite fast in all games, drawing almost no dead cards, and Skyshroud Poacher allowed me to find the answers I needed (Eyeblight's Ending, Elvish Archdruid, Elvish Champion) in two of the games. I benefited well from the new additions Minions' Murmurs and Syphon Mind.

I'm a bit worried about the mana-curve of the deck, with ~42% having CMC 3.
Any feedback on my list appreciated, but I'm not currently buying new cards.

I would consider using Sylvan Messenger. With the token production not effecting Door of Destinies, Coat of Arms would probably produce a more grand result, but if you are playing in a board wipe heavy meta, I would stick with what you have. Do you play a lot more 1v1's than multiplayer games?

I'll keep my eyes out for the messenger in trades, it's probably good for card draw. Coat of Arms is absolutely a better choice, but it also costs more than 10% of this deck. Any cards in my sideboard you'd consider including?

Heritage Druid for fancy combos
Voice of the Woods for very fancy things.
Wild Pair you have more than enough similar creatures to justify this.
Painful Quandary shut down opponents FAST.
Waste Not 100% must-have.
Cry of Contrition either a one mana discard two or a fascinatingly political card; either way a fun one.
Geth, Lord of the Vault sure, he's not an elf, but he scales well with discard/board wipes

A lot of good suggestions, and Voice of the Woods and Cry of Contrition is actually cards I haven't seen before. I won't be acquiring new cards for this in at least a few months, but I'm still curious about what you'd remove if you had to.
Thanks for the comment, appreciate it :)

I love your elf deck. I can just imagine some hilarious situations with this deck. . . Example:

(Turn ten and the opponent is tapped out on everything)

Me: I will attack you for 16 with my 8 Elves.

Opponent: (Laughs) I will take it.

Me: (tap for 9 mana) Vitalizing Wind, you are now taking. . . 112 for lethal. Response?

Opponent: (Stares at the Vitalizing Wind) Well. . . I didn't see that one coming!

Thank you :) Plays like that might happen earlier too with mana-tapping elves and token-production.

Some elves I might acquire: Joiner Adept, Gaea's Herald, Tajuru Preserver, Glissa Sunseeker, Yeva, Nature's Herald. Don't know if any of them are worth it, though.

You know who's an elf? Jarad, Golgari Lich Lord. He's a hilarious follow up to Immaculate Magistrate.

I have one, but it's currently a wincon in my Sidisi-deck. I might swap it in sometimes, and the same with Skullclamp that is currently in my Roon-deck ([75%] Blink blink, nudge nudge).

A friend came over a couple of days ago and traded me some elves. I'd love some input on whether I should include some of them, and what I should cut. The four first is my favorites.
Elvish Visionary - More card draw would be good
Wirewood Herald - Digs for my wincons or stops opponents from attacking
Taunting Elf - Makes all other elves unblockable, or can sweep an opponents board
Elvish Pioneer - Ok ramp
Ivy Lane Denizen
Llanowar Elite
Quirion Explorer
Patron of the Wild
Wirewood Elf
Symbiotic Elf
Elvish Pathcutter
Fierce Empath

I think you can swap Treetop Rangers and Silhana Ledgewalker for Elvish Visionary and Wirewood Herald. A Soul of the Harvest definitely wouldn't go astray here either.

As for the other elves, they don't really add much to the deck.