This leads me to a good example of a layout that isn't achievable in a single pass: Even height columns where the height of all the columns should be determined by the content of the tallest column:

It's certainly possible if we tackle this example directly:

1. Measure all the text.
2. Find maximum height.
3. Set each outer container to the maximum height.

Text doesn't need to be relaid out; we can reuse the measurements. We only need multi-pass if we want to solve a generic problem (i.e. support any kind of content, not just text).

My point is... We need real use cases! There are probably very efficient ways to solve them directly.

Sorry if this is a naive question, but how would I achieve the layout in the picture above with the current features?

Can we reopen #746?