Proxy Design Advice Needed

[nitrogenycs at web.de]

Thanks for the hint so far!
The recipe shown there does not exactly what I want though, it doesn't
do the type() stuff and it hooks up every _ variable which could get
crucial if the wrapped object's methods uses them too.

So I think my question boils down to how I can make type(Proxy) return
type(WrappedObject)?

Any hints?

-Matthias