About martial powers...
I agree with the OP about martial powers in 4e, so I'm working on a couple different systems that would make all martial powers usable at will. Neither is a perfect solution, I know, but for those like me who feel that martial powers shouldn't be vancian, they may spark some better ideas.
Both of these ideas are based around the simple assumption that powers expend energy: At Wills expend a small amount of energy, Encounters put a strain on the user, and Dailies are downright tiring.
(1) Encounter and Daily powers can be used at will, but the character takes a cumulative -2 penalty each time an Encounter power is used after the first usage, (-2 for the second attempt, -4 for the third, -6 for the fourth, etc.). Dailies can be re-used at a cumulative -4 penalty, (-4, -8, -12).
These penalties are for each attempt, not each successful usage.
OR
(2) Encounter and Daily powers can be used at will, but each power can only be used if certain conditions are met. At this point, I'm thinking Encounters would need two conditions met in order to function, and Dailies would need three or four, although its probably best to assign logical conditions to a power based on its effects and power, without sticking to a formula.
There are a lot of conditions, and its taking some work assigning conditions to each power, but as a for instance, here's the Fighter Daily 01 Flanking Assault:
Flanking Assault - Fighter Attack 01
(fluff text)
Martial, Weapon
Conditions: Flanking an enemy that you have already damaged, with at least one additional ally adjacent to the target.
Target: One creature you're flanking
Attack: Str vs. AC
Hit: (etc.)
There are hundreds of possible conditions, but some possible ones are:
Flanked, or is Flanking
Last Attack hit (missed) the same target
Target was hit (missed) by an ally in the same round
Critical Hit
Bloodied, or Target is Bloodied
Granting Combat Advantage, or Target is granting Combat Advantage
Dazed, Stunned, Marked, Blinded, Prone, Deafened, Dominated, Dying, Restrained, Slowed, or Helpless,
or Target is Dazed, Stunned, Marked, Blinded, Prone, Deafened, Dominated, Dying, Restrained, Slowed, Weakened or Helpless
Surprised, or Target is Surprised
Target is Petrified, Immobilized or Unconscious
Target is vulnerable or resistant to X
Adjacent to 1 (or more than 1) Enemy
Adjacent to 1 (or more than 1) Ally
Wielding Melee Weapon
Using Ranged Weapon
Wielding an Axe
Wielding a Sword
Wielding 2 weapons
Wielding a Blunt Weapon
etc,
etc.