I also like some of his ideas.
I wonder why he plays 4 Kor Firewalkers, though... Does he really hate Burn? Submerge is also rarely seen in Esper Blade sideboards. I'm not sure about the 1-of Flusterstorm maindeck, but hey, I play a Misdirection maindeck :)
I also wonder if he plays 2 Jaces instead of 3 for availability reasons, or if he prefers to lower his curve. I've been considering going down to 2 Jaces, but I'm not sure if that's the right play...
Here is what I am considering for tonight:
// Artifact [4]
1 Batterskull
1 Umezawa's Jitte
1 Engineered Explosives
1 Sensei's Divining Top
// Creature [10]
4 Stoneforge Mystic
3 Baleful Strix
1 Snapcaster Mage
2 Vendilion Clique
// Instant [15]
4 Brainstorm
3 Force of Will
1 Misdirection
2 Spell Pierce
1 Counterspell
4 Swords to Plowshares
// Sorcery [5]
1 Ponder
1 Lingering Souls
1 Supreme Verdict
2 Thoughtseize
// Planeswalker [3]
3 Jace, the Mind Sculptor
// Lands [23]
1 Academy Ruins
1 Karakas
2 Wasteland
4 Flooded Strand
4 Polluted Delta
1 Marsh Flats
3 Tundra
2 Underground Sea
1 Scrubland
2 Island
1 Plains
1 Swamp
// Sideboard [15]
SB: 1 Pithing Needle
SB: 1 Sword of Feast and Famine
SB: 1 Ethersworn Canonist
SB: 2 Notion Thief
SB: 2 Rest in Peace
SB: 1 Surgical Extraction
SB: 1 Darkblast
SB: 1 Disenchant
SB: 1 Flusterstorm
SB: 1 Force of Will
SB: 1 Zealous Persecution
SB: 1 Cabal Therapy
SB: 1 Supreme Verdict
I was considering a 24th land to ensure my land drops against tempo decks, but I will try 23 lands + 1 Ponder + 1 Sensei's Divining Top. Ponder and SdT let me find lands in the early game, and powerful 1-of's in the late game... I'm trying a split of discard and counterspells. Instead of playing the usual 2 Inquisition of Kozilek / 2 Thoughtseize, I play only 2 Thoughtseize, and play more counterspells. That way, I still have a few discard spells against combo :)
The Lingering Souls might be better as a 4th Strix or a 2nd Snapcaster. I had to reduce the number of creatures to play Supreme Verdict maindeck... I also want to move the 4th FoW to the maindeck, but I don't know what to cut. Maybe go down to 2 Jaces?
I think I will also play Blade Control at the BoM, with True-Name Nemesis. I'm not yet sure if I want to play Esper Blade for Strix + Discard + Toxic Deluge or Patriot with a small red splash for Pyroblast / Blood Moon.