Adding a DIFFICULT filter?

Hi there, Im bringing a suggestion for the XJ website! It would be nice (especially for begginers that doesnt know so much about KZ climbing) to add at the download center a column showing the difficult of each map, now then we could choose by "difficult level" instead of date, author or filename and choose for ascending or descending. I ask for apologies if my speech isnt that great, Im from Arg. xD

Thank you so much!