I'm not sure I understand what the point of the mapper changes are.
I suppose if someone wanted to further edit the game they would be useful as they might loosen some restrictions. As-is, yeah they are a little pointless and with the way they are being spammed here I suspect they aren't too difficult to make.
A tutorial on changing the mapper would be more appropriate, otherwise the site is going to drown in such inconsequential hacks. Also, I suspect that many of these will never be used for anything.