Currently users are bound to one native language, but I would like to expand on this by having people choose additional languages, accompanied by the level at which you speak it (native, fluent, intermediate, beginner) and a flag or country (e.g. Spanish from Argentina).
I would like to add a database so that when you type in the name of a dialect or region it will come up as a suggestion. This will make the data more uniform and will make it easier to search for local and dialect-specific terms and phrases. Note that dialect can also include other linguistic varieties that have a name.
I would like to add a feature that allows people to add to entries by way of community notes. These shouldn't be notes of "I haven't heard of this", but more of a "yes, and .." style.
Since this is a great tool for language learning, I would like to add quizzes and flashcards that could allow people to practise with the entries from the website.
Instead of just being able to add your own, you could put in a request for a native speaker to explain a specific word or phrase.
Adding the ability to add an audio recording for pronunciation, either by the author of the entry or by another user.