Well, I was interested, so I did it. Hopefully someone else will be interested. Apologize advance for the formatting, and the magic item selection is very generic, just the basics.
Fighter fully multiclassed/paragon'd into Wizard. He actually came out much cooler than I hoped. I tried to pick "tanking" powers and most of the spells are "Close" to avoid OA's as this guy will usually be at melee. Cloudkill I took just because... cmon, if you can trap 4 guys in a cloudkill that can't escape you, that's just money.
Level 30 Human Demigod Fighter/Wizard (Paragon)
Str 28 +9 HP 218 bloodied 109
Con 14 +2 Surge 55 per day 11
Dex 10 +0 AC 45 Fort 37, Ref 42, Will 35
Int 26 +8
Wis 13 +1 Init +20 Move 6
Cha 13 +1
Skills: Athletics +29, Endurance +22, Heal +21, Intimidate +20, Arcana +28
Feats: Arcane Initiate, Action Surge, Novice Power, Acolyte Power, Adept Power, Weapon Focus: Heavy Blade(+3),
Human Perseverance, Devastating Critical, Blindfighting, Improved Iniative, Spell Accuracy, Irresistable Flame,
Iron Will, Lightning Reflexes, Great Fortitude, Toughness, Fleet Footed, Spell Focus, Combat Anticipation
Race: +1 all Defenses, Extra Skill, Extra Feat, Extra At-will
Class: Weapon Talent +1 One-Handed, Combat Challenge, Combat Superiority
Epic Destiny: Divine Spark, Divine Recovery, Divine Miracle
Basic Attack:
:

: Longsword: +34 hit, 2d8+18 damage.
At-Will Attacks:
:

: Reaping Strike: +34 hit, 2d8+18; Miss: 5 damage
:

: (Paragon) Thunderwave: blast 3 +29vsFort, 2d6+14 thunder damage, push 1.
:

: (Human Bonus) Cleave: +34 hit, 2d8+18, adjacent foe takes 5.
Encounter Powers:
:

: (Paragon) Color Spray: blast 5, +29vsWill, 1d6+14 radiant damage+dazed.
:

: Vorpal Tornado: burst 1, +34 hit, 1d8+18 damage. Push 1 and knockdown.
:

: Warrior's Urging:: burst 4, all opponents in range must shift 3 adjacent to you. Burst 1, +34 hit, 2d8+18 damage.
:

: (Arcane Initiate) Scorching Burst:: burst 1, +29vsRef, 1d6+14 fire damage.
:

: Black FIre: blast 5, +29vsRef, 6d6+14 fire/nec damage.
Daily Powers:
:

: Strike of the Watchful Guard: +34 hit, 4d8+18 damage, free melee if target shifts or attacks allies.
:

: Prismatic Spray: burst 5(foe only) +29vsAll Fort: 3d6+14 poison, slow. Ref: 3d6+14 fire, ongoing 15 Will: Stun
:

: Storm of Destruction: two targets +34 hit, 5d8+18 damage; miss half.
:

: (Paragon) Cloudkill: Burst 5, autohit. 1d10+14 poison damage. 1d10+14 poison to any that start within. Sustain Minor. Move action to move 3.
Utility Powers:
Stoneskin: 10 resist all for encounter. (Daily, minor)
Defensive Training: Gain +2 to either Fort, Ref, or Will (Daily, minor)
Iron Warrior: Spend surge, gain add. 2d6+2, make save. (Daily, minor)
(Paragon) Blur: +2 to all defenses. Foes 5+ away cannot see. (Daily, minor)
(Epic) Divine Regeneration: 28 regen for encounter. (Daily, minor)
Vorpal Longsword+6, Wand+6, ElderScale+6, Amulet+6
Edit:
Stoneskin+28 regen/round+Blur=absurdly hard to kill. Not the best damage output ever, but I believe this guy would be pretty darn good at controlling the enemies movement and keeping them distracted.