Hello,
I personally don't want and don't need this feature. If it comes to debugging a cronjob I'd like to see its output in a real time, with probably set -x... I will have more speed when working in a shell, so I'd rather do it in a console. As I will need to do code modifying -> execute -> see output, probably use some grep and/or another commands. Again modify, execute, break, modify... comment, etc.
But it does not mean the others don't need it... If I recall it correct the feature was already requested here, so you might want to search the forums.
p.s. Why do you ask here? Do you need votes to get this feature added? Did you try contact John from Directadmin via tickets on the matter?