I am not sure if this is already been talked about. But something I would like to see as I move along and process. Currently working through N4. But Japanese words to Japanese definition for the higher levels, I think that would be great for all levels as an option even if it's a pro option. For working on Japanese brain.
Would absolutely love to add this, but I've never been able to find a non machine-generated set of jpn-jpn dictionary data that we could legally integrate into renshuu.