Stop Giving the "Need" Command for Drop Gear in Dungeons to Higher Geared Players!

[Bloody]

It's not dressing-up the OP's request. It's a suggestion satisfying both sides.
If you were to roll Greed on everything you can't Need you have a priori given up on the thought of all gear being equally Needable. There's no comparison for you there.

And it is skewed.

No, it is nigh identical to the OP: 100% equal opportunity when rolling on gear, irrespective of the role/class you are playing. The only thing you've changed is leaving the current two-tier system of priority in place for those who "don't want something as bad as others." People who disagree with the OP think that the current system is fine and giving class/roles priority on gear designed for their use is a legitimate allocation of potential rewards. You are arguing to remove that reward. That's clearly not "satisfying both parties," that's redressing the OP with slight variation.

Skewed implies heavily imbalanced. 2% is not even close.

Hell, if we want to use your math for probability of acquiring gear, under your suggestion, you would reduce all party members down to a 3% chance of acquiring the gear they want for left side in light party, and 1.6% in full party. Don't believe me? Take that 14.2% chance of a drop occurring, multiply by 0.25 or 0.125 based on party size, and you have the odds of getting your piece. Each party member may have a 25% or 12.5% chance on each piece that drops, but for specific drops it plummets. Bouncing between specific and general applications is less than honest if you want your argument to hold weight.