I think the workflow to start a new empty wiki can be simplified.
We can use something similar to the full-edition which contains all possible languages.
- Open the all-language edition
- Let the user select the language
- Enable a save-button, next to the language selector
- Done
A second workflow could be:
- Open the all-language edition
- User selects the language
- Offer a drag & drop link, that can be used to install the language in your own wiki
Would that make it easier?