Currently, MediaWiktory at early stages of development (aka "young yet useful"). Currenty problems and roadmap can be found at GitHub Issues and are grouped into milestones.
Therefore, the big picture of "what next" is:
- more validations and cleaner errors;
- gfaceful handling of logging in, cookies and tokens;
- support of "old" docs format (think wikia.com).
You can join MediaWiktory development by usual fork-commit-pull request process, or by providing your own cases and problems you'd like to solve with it.