Might be good, but I don't agree with Wohlstand. It shouldn't be included in SMBXtended as Samus has a lot of special powers. Also she can shoot which gives her a huge advantage. you can block characters in the World Map file. This provides another advantage anyway, allowing Mega Man or Mega Man-es...
something I'd really like to see for this is a feature akin to Photoshop's Marching Ants (Box version, or Polygonal Lasso), so you can only select what is inside them. This would reduce the risk of deleting or overwriting things accidentally or filling the whole stage with the Paint Bucket, and coul...