Oh, that's the one that bothered me most. If you can guess how long the copy in each section is in order to write it, you can just fill in that same space with

Oh, that's the one that bothered me most. If you can guess how long the copy in each section is in order to write it, you can just fill in that same space with lorem ipsum, and now you haven't wasted time working on something that's going to be thrown away. Testing with multiple lines and strings of different length is a different matter — you should do that anyway. But writing paragraphs of marketing copy and headlines? Not a good use of my time.