No surprises from me..
Yes I think greatswords and certain long polearms are OP.
Range of a weapons i undervalued compared to speed/damage/price/other attributes in the balance formulas.
With a longer weapon in battle you can:
* Choose targets in a larger radius
* Get first attack (as a shorter weapon has to block first)
* Project threat in a larger radius
* Have cav defense in main weapon
* Backpedal spam with the obligatory kick opportunity
This is all enormously useful attributes, and hence most 2h/pole take as long a weapon as possible. It is also silly that such long huge weapons can be swung as fast as lighter, shorter weapons. The actual swing speed difference between a bastard sword and a GLA is negligible with hiltslash and turning.
etc etc..
I want to see longer weapons slowed down a lot and with increased damage. Not all weapons should be made to be perfect duel weapons. If you complain that gameplay is slow, you should grab a faster weapon. You can't have great range, great speed, AND great damage. Choose 2.