We love to hear your feedback. Your suggestions and ideas are important to us. Our feedback forum is a great place to post your ideas and vote on others. Please share your detailed use case and how the proposed enhancements can increase value to your business. We do read all of your posts, but may not be able to respond to all comments.
More information on the status of submitted ideas can be found here
The ability to make the language profile question mandatory is already supported. It appears that the settings to control this were not properly displaying. This has now been corrected.
To set, go to settings > profile language question. From here you can set if the first language option is mandatory, as well as whether the follow on questions regarding reading, writing and speaking proficiency is mandatory.