> Although it's been a long time since I touched KDEPrint code,
> from an internal point of view, I think these following changes
> should be also considered:
> 1) make KPrinter inherit QPrinter (I didn't do it at the time I
> designed KDEPrint, due to QPrinter limitations; I guess these
> limitations have disappeared now)

This is something where you could probably save others a lot of time:
Could you elaborate a bit on what the limitations were, please? As far as you 
remember...
Finding and trying to overcome limitations is painful and time consuming - you 
have already done so and therefore you have valuable information.
Thank you for showing up :)