What I would like to see in odfuzz to tag it as 1.0 / Stable.
Refactor the codebase so it does not depend on pyodata directly with monkey-patching and be better testable (focus on the URL generation)
Modularize better, so CLI, networking and database is away from URL creation from url parts by generators and mutators. Even if it will not end on pypi, should be still composed from something like library (usable as python module) and cli wrapper.
Modularize the metadata generators/mutators better for future support of different odata versions
Tests, tests, tests (integration)
Support the multiple primary keys (something + something + something) so it opens up support for not only GET requests but POST, PUT, PATCH, DELETE as well.
Consider replacing the mongoDB, use sqlite instad (simplicity).