Gotta say, I also fancy that list! I included some suggestions below.
3 Snapcaster Mage --------------> 2 seem like the perfect number to me, as I always count him as CMC3, and 13 CMC 3+ spells (not counting FoW, Batterskull) feels like 1 too many imo
4 Stoneforge Mystic
3 True-Name Nemesis
2 Vendilion Clique
4 Brainstorm
1 Celestial Flare
1 Counterspell
4 Force of Will
1 Spell Pierce --------------> only random choice: Pierce is only good during the early game/ early mid-game. Being a singleton you'll hardly every have it available then, which is why I'd prefer: Fluster Storm/CS/Snare/Ponder/Misdirection
1 Spell Snare
4 Swords to Plowshares
1 Supreme Verdict
Artifacts (3)
1 Batterskull
1 Sword of Fire and Ice
1 Umezawa's Jitte
Planeswalkers (4)
4 Jace, the Mind Sculptor
3 Island
2 Plains
4 Flooded Strand
2 Marsh Flats
4 Mishra's Factory ---------> definitely too many, considering you run 15 spells requiring at least 2 colored mana resources (counting SCM). I'd go with 2, adding 1 Island and 1 Mystic Gate
3 Polluted Delta
4 Tundra
1 Academy Ruins
1 Karakas
1 Manriki-Gusari
1 Pithing Needle
2 Meddling Mage
1 True-Name Nemesis ----------------> not sure if needed, if you want to race opposing TNNs, maybe Flare #2 might be superior
1 Detention Sphere
3 Rest in Peace
1 Flusterstorm
1 Path to Exile
2 Swan Song
1 Venser, Shaper Savant -------------> I'd still prefer O. Ring as SnT hate
1 Supreme Verdict

