Dude, that's madness. The prevalency of errors is never their own justification.
GW has for some reason decided to 'relax' the armour standards of the Empire miniatures. Because of this we have a discrepancy between what we see on the model and what we get in the rules, i.e. Outriders get light armour when they're wearing something akin to Full Plate, Greatswords get Full Plate when they're closer to heavy armour and the state troops (Halberdiers, Swordsmen, Spearmen) can't decide what they're wearing.
I'll get into more detail later on...
The problems with your position are twofold (threefold, if you count your attitude problem).
I don't care much for personal insults so leave them out of the discussion as they only serve to diminish your own arguments.
For one, and despite the cognitive blocks of your preconcieved notions of what is and isn't heavy armor, state troops are armed with light armor and that's what people associate with when they look at the state troop figures.
Again with the insults...
Anyways, unless GW is making a new standard on armour classifications the only analogue is that of real armour and I stand by that. And by that analogue state troops may very well be wearing heavy armour already. But considering the range of models this "WYSIWYG" way of looking at things won't last very long.
Back to what I was referring to above. It's not only Empire that is having problems with the appearances of their troops. Chaos marauders for example can have light armour even though they are practically naked on the torso save a few leather straps and the odd metal bit. And this problem appear in most armies.
So the notion of armour save in the world of GW might not only be about the appearance of the models it might also be a more abstract term outlining a general fighting prowess and not just the thickness/coverage of the armour they may or may not be wearing. So unless GW are to redo ALL models to exactly match their equipment the only logical argument is that the amount of actual armour is irrelevant, the armour save represents more than meets the eye so to speak.
And fluffwise state troops are no hatchlings but professional soldiers, perfectly capable of defending themselves.
Whether or not it looks heavier or lighter than it should is absolutely immaterial.
You said it yourself.
Secondly, there is no feasable way to up-armor halberdier models that are equipped with heavy armor. Such produces a WYSIWYG problem.
They don't have to, GW has already sorted that problem out.
When someone sees a unit of 'bog standard' halberdiers composed of bits found on their own sprue, an opponent will assume that they are armed with light armor as that's what they are modeled with.
What was that about "preconcieved notions" again? You think that they are modeled with light armour, that is your image of them. In my eyes they can be both with no problem, and with the abstract armour save argument above they must be.
Basically, this is a change that requires either extensive conversion work and kit bashing, or requires a brand new set of state troop plastics. Neither of these are viable options for improving the halberd so more people take them. As we can only make rules here and not minatures, my philosophy is to "make rules that fit the miniatures."
There is no conflict right now, and please, if you really dislike the current proposals would you mind being more constructive than just picking them apart?
I re-iterate what I said earlier.
Its a good excuse for GW to make some more models that actually look good as opposed to the dire ones that they're selling right now.
Too bad that is not likely to happen anytime soon...
EDIT: Cleared it up a little...