We used denoising only on certain occasions as it was really not necessary for most of the recorded dialogue. And you are right, the English Bernard actually is from Australia and we love what he did. We just don't think it is a good use of our time to go through hours of recordings and trying to alter a slight accent.
Concerning the "pitching" after Hoagie is done with the bench: we think it makes the "bitching" sound more stronger in this place. Sometimes, an "mistake" can be intentional. That line replaced with Hoagies standard "bitching" makes it sound weaker.
Don't get us wrong, that was interesting feedback, indeed. We just take the opportunity to explain how we came up with this. Maybe, next time we want to record a strong "bitchin"-line and push the voice actor to a "pitching", we may remember this and will try a slightly softer p, that is still strong enough for what we want to tell? ;)