This looks nice.
 Q1.) The scripting page shows you how to save a bitmap for each repetition of a for loop. Assuming you have version 1.2.20190902++ or later, an example will appear in Scripting/Templates/Explode. Just remove the comment (#) in front of the line "#gl.savebmp(str(x)+'.png')"
 Q2.) I think the scripting section of the Wiki is a great place to share scripts. The Gallery section of the Wiki allows you to share images. I am not sure whether the NITRC wiki system allows you to insert videos, but you could always link to a video shared on an external site like YouTube from the scripting or gallery sections of the wiki,