Would be nice to have the ability to use the Overflow Destruction Card with the source cells, as currently having any interfaces/pattern providers anywhere near a source link leads to their input buffers filling with source. The OD cards would allow you to void extra source once the cells are full like you can with item cells, fluid cells, etc.

This hadn't even occurred to me, but you're right that it would be good to have. I'll see what I can do about this.

I've now implemented this in dev, but I'm keeping this issue open until I eventually make another full release.