I mean, the .xcf files are going to be pretty big; they're basically a bunch of blank layers in the shapes of the different regions of the .png. I've found that editing layers above the spot I want to work on, then changing the layer to Overlay mode or something, greatly increases my ability to go back and fix mistakes. That's still a pretty ridiculous file size for the .png's, though.
I also got some more Skin ideas for BF(i dont have names for them)
-Skin that keeps the natural black and light blue parts of BF but replaces the White with a NOT SHINY orange(there are lots of Skins here that would look good but have that metallic Shine which kinda ruins them)
-Skin that keeps BF`s natural black but replaces the light blue with a green like that used in rafs´retro future Skin and makes the White parts a matte grey
sorry for double-Posting but i got These ideas a bit too late