AbdulAlhazred
Legend
The fighter can certainly swing an entire encounter with the drop of a single power. A well-timed Come And Get It or Warrior's Urging is devastating. Note that this devastating quality is not primarily due to whether the character executing said power is a wizard or fighter, but the design of the power itself. Rather, the fact that the fighter is using a weapon instead of an implement simply means that in addition to all the other things that make the powers nasty, they will also do more damage than if they were in an implement-user's repetoire.
Come and Get It MIGHT swing an encounter, of course. Anything MIGHT, and it is a perfectly fine power. OTOH Flaming Sphere WILL win an encounter except under the most adverse possible circumstances. Consecrated Ground WILL win an encounter almost every time. There IS a difference.
It is absolutely possible to do an apples-to-apples comparison with powers. I'm shooting a laser, you're firing an arrow. I'm doing 3d6 at range 10 and you're doing 3d12 at range 40. There's a discrepancy there, and getting all holistic about it is, IMHO, kdding yourself. Sure, you have to factor in class features that have a global impact on the class's powers (like sneak attack or hunter's quarry), but that's about it.
No, I'm not kidding myself at all because said laser cleric is ALSO healing someone at the same time. I'm not sure exactly which powers you're referring to 3d6 vs 3d12 but I'm going to postulate that your 3d6 at range 10 is also debuffing the enemy in some fashion. It just isn't ALL about damage output. If it was a party of 5 rangers would be invincible and that just doesn't pan out in practice. Now, I'm not opposed to the idea that your great bow wielding ranger may WELL be the most overall effective single character build around and the reason for that may well be all the damage he can dish out. I'm just not automatically convinced that it overbalances all the things that casters can do.
To avoid having a damage bonus apply to AoE's, it's pretty straightforward: confine the bonus to ranged or melee attacks. That's why IAoP don't help Come And Get It or Warrior's Urging.
OTOH, a ranger straps on some iron armbands, and he can get that damage bonus on every hit from a Blade Cascade. Yet IoAP continue to exist un-nerfed. If they merit existence, a similar item for casters is perfectly valid.
Sure, but the Ranger gets to do one or two of this kind of attack in a day and they're close burst powers at best. The Wizard (who isn't even a striker) can do a range 10 3x3 burst EVERY ROUND if he wants, can lay down a 5x5 zone of autodamage that blocks LoS, a wall of fire, etc. If you're going to slap a +2/+4/+6 damage bonus onto those attacks every single round for every target, YES you are going to bust lose some game balance pretty soon. I assure you.
Most of the games I've run have been in mid-high heroic and low paragon. At those levels I think weapon users actually have the best of it over casters and yet time and time again I've seen Wizards turn an encounter into swiss cheese with the flick of an implement. The Fighters, Rogues, and Rangers were in there every fight chewing away like mad and pinning the enemy down, so they weren't less important and I'm not saying I haven't seen them downright win a fight with awesome either, but the Wizards and the much maligned poor old Starlock (who is actually pretty darn nasty despite the classes bad rep) definitely pull off the "I Win" quite a bit more often than the melee chaps do.
I don't think it would hurt for some casters to get a little extra juice on single-target attacks. Warlocks certainly could use it. It wouldn't really hurt Wizards either (though the Essentials buffs to encounter spells and Mage school features may change my mind on that). I'm just not convinced that weapon users actually end up far ahead across the board as some people seem to like to claim.