But then you're an archer, and we're not talking about polearms anymore.
No, you're an Insightful Warlord, combining Intuitive Strike (Melee-based, Wisdom modifies it) with other Insightful powers (either Melee-based, or non-weapon at all, also Wisdom based and tend to be immediate actions) with your polearm to improve their reach (immediate actions+reach weapon=covers more ground).
Now, let's see. Heavy Blade Opportunity requires a Dex of 15, and is fantastic with Warlord powers.
That means I only need a 14 in Dex to start, and as you say, not a bad attribute to go with as a tertiary....
(editted to 21st level; reeditted because if human reach is good, goliath reach is bettteerrrr)
====== Created Using Wizards of the Coast D&D Character Builder ======
Taladantalas, level 21
Goliath, Warlord, Stoneblessed, Eternal Defender
Build: Insightful Warlord
Warlord: Canny Leader
Commanding Presence: Insightful Presence
Versatile Expertise: Versatile Expertise (Heavy Blade)
Versatile Expertise: Versatile Expertise (Polearm)
FINAL ABILITY SCORES
Str 26, Con 14, Dex 17, Int 12, Wis 20, Cha 11.
STARTING ABILITY SCORES
Str 16, Con 10, Dex 14, Int 10, Wis 15, Cha 9.
AC: 35 Fort: 35 Reflex: 29 Will: 34
HP: 126 Surges: 9 Surge Value: 31
TRAINED SKILLS
History +16, Endurance +16, Athletics +24, Heal +20, Intimidate +15
UNTRAINED SKILLS
Acrobatics +12, Arcana +11, Bluff +10, Diplomacy +10, Dungeoneering +15, Insight +17, Nature +17, Perception +17, Religion +11, Stealth +12, Streetwise +10, Thievery +12
FEATS
Level 1: Improved Insight
Level 2: Versatile Expertise
Level 4: Goliath Greatweapon Prowess
Level 6: Blade Opportunist
Level 8: Saving Inspiration (retrained to Heavy Blade Opportunity at Level 11)
Level 10: Markings of the Victor (retrained to Heavy Blade Mastery at Level 21)
Level 11: Polearm Gamble
Level 12: Fight On
Level 14: Markings of the Victor
Level 16: Battle Awareness
Level 18: Paragon Defenses
Level 20: Inspirational Attacker
Level 21: Reliable Action
POWERS
Warlord at-will 1: Intuitive Strike
Warlord at-will 1: Wolf Pack Tactics
Warlord encounter 1: Powerful Warning
Warlord daily 1: Fearless Rescue
Warlord utility 2: Flash of Insight
Warlord encounter 3: No Gambit Is Wasted
Warlord daily 5: I've Got Your Back
Warlord utility 6: Reassuring Gesture
Warlord encounter 7: Join the Crowd
Warlord daily 9: Ready the Charge
Warlord utility 10: Tactical Orders
Warlord encounter 13: Bolstering Insight (replaces Powerful Warning)
Warlord daily 15: Comrade in Arms (replaces Fearless Rescue)
Warlord utility 16: Help or Hinder
Warlord encounter 17: Forced Respect (replaces Join the Crowd)
Warlord daily 19: Anticipate the Target (replaces I've Got Your Back)
ITEMS
Magic Glaive +5, Magic Weavemail Armor +5, Amulet of Protection +5
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Totally doable, not to mention, with -this- build, I can put one point into Dexterity (instead of Wisdom) and totally go Heavy Blade Mastery, with his glaive action.
So my response is:
Heavy Blade or Polearm? Why not DO BOTH!?!