Within the Gene Wiki project we developed the Wikidata Integrator. When we started in 2014, it wasn't clear which Pywikibot to use. There was a compat and a core version. So we started directly interacting with the API and write our own wrappers around the API. These wrappers in end consolidated in the WDI.
The hackathon might be a good opportunity to reconsider and explore if WDI and Pywikibot can be merged into one python library