I've looked through several CharOp threads here looking for a human fire-spec wizard (arcanist).
====== Created Using Wizards of the Coast D&D Character Builder ======
Jovan Kross, level 19
Human, Wizard (Arcanist), Blood Mage
Build: War Wizard
Arcane Implement Mastery Option: Staff of Defense
Arcane Admixture Damage Type: Arcane Admixture Fire
Human Power Selection Option: Heroic Effort
Waterdeep (Waterdeep Benefit)
Theme: Scholar
FINAL ABILITY SCORES
STR 9, CON 16, DEX 14, INT 24, WIS 14, CHA 14
STARTING ABILITY SCORES
STR 8, CON 11, DEX 13, INT 17, WIS 13, CHA 13
AC: 32 Fort: 27 Ref: 31 Will: 30
HP: 98 Surges: 9 Surge Value: 24
TRAINED SKILLS
Arcana +21, Diplomacy +18, Dungeoneering +16, History +21, Insight +16, Religion +21
UNTRAINED SKILLS
Acrobatics +11, Athletics +8, Bluff +11, Endurance +12, Heal +11, Intimidate +11, Nature +11, Perception +14, Stealth +11, Streetwise +11, Thievery +11
POWERS
Basic Attack: Melee Basic Attack
Basic Attack: Ranged Basic Attack
Scholar Utility: Use Vulnerability
Human Racial Power: Heroic Effort
Staff of Defense Power: Staff of Defense
Wizard Utility: Ghost Sound
Wizard Utility: Light
Wizard Utility: Mage Hand
Wizard Utility: Prestidigitation
Wizard Attack 1: Winged Horde
Wizard Attack 1: Thunderwave
Wizard Utility 2: Memory to Mist
Wizard Utility 2: Shield
Wizard Attack 3: Fire Shroud
Wizard Utility 6: Fire Shield
Wizard Utility 6: Wizard's Escape
Wizard Attack 7: Lightning Bolt
Wizard Attack 9: Visions of Ruin
Wizard Attack 9: Wall of Fire
Wizard Utility 10: Witch's Reversal
Wizard Utility 10: Illusory Wall
Blood Mage Attack 11: Blood Pulse
Blood Mage Utility 12: Soul Burn
Wizard Attack 13: Blackening Pyre
Wizard Attack 15: Enervation
Wizard Attack 15: Prismatic Beams
Wizard Utility 16: Clever Escape
Wizard Utility 16: Fly
Wizard Attack 17: Dancing Flames
Wizard Attack 19: Evard's Ebon Bindings
Wizard Attack 19: Feast of Destruction
FEATS
Level 1: Staff Expertise
Level 1: Ritual Caster
Level 1: Dual Implement Spellcaster
Level 2: Superior Implement Training (Accurate staff)
Level 4: Stoking the Fire
Level 6: Enlarge Spell
Level 8: Destructive Wizardry
Level 10: Burn Everything
Level 11: Spell Focus
Level 12: War Wizardry
Level 14: Sympathy of Flame
Level 16: Arcane Admixture (Fire - Thunderwave)
Level 18: Consuming the Weak
ITEMS
Spellbook
Accurate staff of Ruin +4 x1 (with Siberys Shard of the Mage (paragon tier))
Defensive Staff +3 x1
Executioner's Bracers (heroic tier) x1
Burning Gauntlets (heroic tier) x1
Fireburst Boots (paragon tier) x1
Cloak of Resistance +3 x1
Headband of Perception (paragon tier) x1
Ring of Retreat (paragon tier) x1
Robe of Stars Mindweave Armor +4 x1
Whetstone of Combustion (heroic tier)
Salve of Power (heroic tier)
====== End ======
I've largely focused on sheer damage output with some solid friendly-fire area control, with only a few single-target spells (and ways to recycle them). I'd like to add a little more control, but with a char-broiled flavor.

Any suggestions/comments are appreciated.