I hear what you are saying man as I live in QLD, but I have never had a problem with the IP finish, that might just be how inconsistent my drives are anyway that I don't notice the difference, but it is an interesting theory non the less.
Would be interesting to here from other QLD members if they found the same as you suggest with say the crazy 435 or 450.
Very much looking forward to the new zero though man, hope increased head size means more forgiveness.
Looks stunning and sure it will feel unreal.