I do not fully understand - you want to make boots registering easier or harder?
vBET is not tool for making registering harder. Such thing can be done by mods asking questions or CATCHPA.
Also - I do not understand step 2 - when user made first language select (this "previous" value to compare)?
No response. Because we do not understand the request and author doesn't response - it is rejected. We can change the status if we get more info.