[kentonv]

> Having to stuff all my logic in one big script sounds a bit annoying.

Keep in mind that you can write your code as a bunch of modules and then use a tool like webpack to bundle it into one script, before you upload it to Cloudflare.

> for testing/development purposes

I agree with this, we definitely plan to add better ways to test script changes. Currently there is the online preview that shows next to the code editor, but it's true that there are some limits to what you can test with it.