I have rather mixed feelings about it to be honest with you..
Like with the list of supported users or co-authors, if you provide support for the hack (checking the box), shouldn't the author's name be automatically listed? Some people have checked the box and added their name, others have just checked the box.. It's somewhat confusing I guess.
Also, if you are the author of an add-on, there should be some kind of feature where you can add your mod as an add-on to a hack. Like with the Arcade modification by John, I noticed some add-ons are listed - but not all.
I hope these points are taken in to consideration..