I recently built a Mist Valley deck and found it to be awesomely fun! Now I want to bring it up to the next level and wanted to ask what kind of improvements it could use.

Here is the beta build:
Monsters:
Mist Valley Thunderbird x3
Flying Kamakiri #1 x3
Mist Valley Falcon x3
Dragunity Darkspear x3
Dragunity Legionnaire x3
Dragunity Aklys x1
Twin-headed Behemoth x1
Silpheed x1
Delta Flyer x1
Swift Birdman Joe x1
Garuda the Wind Spirit x1
Mist Valley Soldier x2
Hunter Owl x1
Mist Valley Apex Avian x1

Traps:
Mirror Force x1
Icarus Attack x1
Magic Cylinder x1
Bottomless Trap Hole x1
Begone, Knave! x 2
Divine Wrath x1
Soul Rope x1
Call of the Haunted x1

Magic:
Back to Square One x1
Divine Wind of Mist Valley x3
Swords of Reveling Light x1
Gold Sarcophagus x1
Monster Reborn x1
Dark Hole x1
Mystical Space Typhoon x1

Extra Deck:
Stardust Dragon x1
Red Dragon Archfiend x1
Black Rose Dragon x1
Ancient Fairy Dragon x1
Thought Ruler Archfiend x1
Mist Valley Thunderlord x1

This deck uses Begone, Knave with the field card to return enemy cards while swarming with mine own, Mist Valley Soldier also help with the field card and I want to get some Mist Condors to help with that too.

I also use Mist Valley Soldier and the Silpheed and Garuda to Synchro summon easily.

Another combo I use is Darkspear to pull Falcon from the graveyard and Legionnaire to blow stuff up.