I had a look at the addendum these days and figured out that the pitch fx seemed to be one of the earliest fx in the KPA (OS 1.8, OS 2.0). Personally they always sounded very unnatural to me and as I never use them (although I really like these sound options, e.g. Leadlines of 5FFDP) I never could get any really usable sound out of it. So maybe we can expect some upgrades as with delays in the future?!
maybe the Formant parameters will help
Thanks for the hint. I tried everything but still find it a bit unatural and in band context kind of not audible.
Was just an invitation ad offerendum. Maybe there are others that have the same idea about it.