the real problem isn't as much about weapon lengths is about hitboxes, polearm hitboxes are ridiculous in that a guy can have what's considered a 31-33p attack at 1mm distances where his arm hasn't even extended all the way(if humans had automotive springs for arms maybe we could do this),
a 2h facehugging CANNOT hit you with a thrust, a polearm can do it multiple times because of the stun effect, it doesn't really matter if u have a tiny range advantage, just means one person has to block before the "dance" begins, also every weight advantage is with polearms so 2h's stun off everything so you generally have to block twice for every attack u get(katana after the weight nerf=worthless because of this)
also people like to say "Well my range 141 poleaxe actually has -xx range because of", NOT TRUE, thing is you just have a different THREAT RADIUS from your swing
let me explain, a guy with a bec swings, you're behind him, you die, why'd it happen, because of the fact the whole length of the polearm is dangerous when he swings, just because its maximum range of threat isn't as far doesn't mean it doesn't create a large area of hitting anyone, and sweeping enemies is very important
polearms are very good at that because they you may be able to say they don't extend 141 or 131 out from a thrust, but you can't say they don't threaten a larger area with each swing(they do, just some is behind to the side of where you think it is, good lolarmers use it to their advantage)
also the "poleaxe" has a better overall threat range than any greatsword(at 141), its why my Polearm alt has one heirloomed, and every similar sized polearm is heavier than every greatsword so you stun all of them so you usually get 2 strikes per 1 counter
Also changing great sword animations to be halfsword is stupid and unrealistic, read actual great sword fighting manuals(society of renaissance fighting is a good start), you'll see the stance they take with a thrust is=what we use ingame right now(sorry to the "pseudo-historians")