Would it be possible to add a scripts as an input to the split and join blocks. That way, you could do things like this:
and this:
These ideas are not super important or necessary, but would be cool addition to have
This is super important, because it's part of the (coming) macro feature, which will let a program write part of itself on the fly. But it won't be part of the SPLIT block, even though that's an elegant idea, because SPLIT is just an interface to a JavaScript primitive and we won't want to hair it up. It has to be fast. But it's coming in some form.
Great! Nice to know it's in the works.