It would be nice to have a feature such as indexing the colors of icon files to reduce the rsc size of the game. I figure it would be really useful for large scale games trying to make it easier on dial-up users.
Edit:
Also, the option to switch the color mode back to RGB just in case people need to add new colors to the icon file.
Thanks,
Tekken
In my tests, a color index offers little additional compression for small icons, such as the 32x32 BYOND standard. Also, as of 4.0 icons are saved as PNG, which is comparable to the old (indexed)DMI standard for icons with a few states/dirs.