You know .... it would be really useful for games like Chrono Trigger and Super Mario World that have those nice GUI editors like Temporal Flux and Lunar Magic to have standard "blank template" IPS patches that basically remove all the game-specific data (level layouts, item locations, anything to do with story) so people can start making new games with the engines and characters without each new person having to re-invent the wheel.

If we had that, Temporal Flux would be like, the greatest RPG Maker tool ever.

One of these days, when I've got some time on my hands (school starts next week so who knows when this will be) I might try and work on this. Any ideas/suggestions? Anyone else want to give it a try? Has anyone already done it? Is this even making sense to anyone?

FFhackster had somethign sorta like this.  Users could export a map they made empty, and import it for maps they wished to be "blanked out."

I'd assume a few more editors with similar features could work the same :/

Dear god. That dialog makes Baby Jesus cry tears of blood.

Might I suggest a TreeView, sir?  It would make this form much less confusing.  Also, it'd be rather easy to transition, since most languages support boolean values for the individual nodes.  TreeViews, while not perfect, can also be keyboard-navigable.  You could even add logic to (de)select child nodes when the parent nodes are (de)selected.  This would result in far less clicks if they don't need to clear everything.  Finally, adding nodes to a Treeview is generally less involved than scoping out a new area for a checkbox and text.  The whole thing scrolls vertically and is hierarchical, after all.

Not trying to rag on you here.  I just think it better suits your particular application and is easier on the eyes.