Doesn't this just support my argument?
I like variety, but your suggestion of changing pretty much all polearms to a cut thrust is a joke.
As for the rest is the Long Awlpike not a reasonably long support weapon?
Not a typical pike weapon. Having both pike and long spear cut would be silly. Considering they're very different already, you wouldn't need to change their damage type to get some variety. Also, heavy horses would be really op with almost all polearms having cut damage on the thrust. No rearing and terrible damage.
Won't lances being high cut damage finally solve the Lancer QQing about peasants surviving lance hits when tincans get one hit?
The question is, why all lances (don't count the practice lance, its damage is laughable)? Could accept one of the lances being high cut, but all of them doesn't make sense when you say you're after some diversity.
Do the Military and Battle Forks not count as piercing Hoplite Weapons? (This one is a genuine question as i don't know if they are un-useable with Shields like the Awlpike)
They're useable but the very short. Military fork can't even rear horses.
The point here is not to arbitrarily pick some weapons to change, this is how item balance has worked for too long imo and it just leads to mass lobbying, QQing for change and endless whine. Changes should be made for specific reasons and once made the changes should be applied to all items of a similar design.
No thanks.