1:55 I definitely could see a material select to be useful. As well as allowing one to define the extension retraction in you didn't want to extend an entire plane if possible. Also for videos like this I would recommend using the /time speed 0 command to freeze time to allow max sunlight to shine throughout the video.

Now I don't know how many would make use of this feature idea but.. What if the pantograph had another ability.. The ability to export the shape of chiseled blocks it's used on in a specified folder. Think about it, then some modders could use the game itself to model blocks for their mods as a slight alternative to the model maker. Only thing they'd have to do is fine tune the textures and such in the model maker.

How do you remove a different block from a chiseled block?