> Do you want met to pick up your suggestions or do you want to play with this yourself? 

If you could add another commit to your branch to incorporate the discussed changes that'd be great.

>  Ps. I could take up another task at a certain point. Although progress will be a bit more slow, since my holidays are over :-(

That would be awesome, Sjaak. Any help is more than welcome, and already this contribution is a great step forward. You can find the back log [here](https://github.com/mapstruct/mapstruct/issues?state=open); some of the issues are only rough thoughts, so we might discuss them in more detail if required. I also saw your issue regarding support for custom factories; I haven't yet come to dive into the details of this issue, but I'd love to see support for this. So this might be great task to pick up. Thanks again for your contributions!