Hi, Johan,
I have a little spare time and would be interested in taking over maintenance of network-uri.
However I'm not sure if I'm a right person for that. I've never maintained any haskell package before, but would be glad to. I'm experienced with maintenance issues applied to C/C++ but not Haskell. However, I'm sure they are pretty much the same.
I looked through github issues; as far as I understand, the maintainer's responsibilities are tracking things work fine with newer versions of dependencies, fixing bugs that doesn't break source-level compatibility and rejecting other proposals. I believe I would handle this.
Regards,
Alexey