Hi. I'm the language designer behind this feature :)

A few points.

> but the following would generate the same string, since each line begins after the """:

That's not a virtue here. The point is to be able to write clear literals that never need escapes and which allow for easy grokking of what the content actually is.

All current string forms in C# require some amount of manual (or tooling) help to fix them up to be legal. That's not the case with this literal. The content can always work as-is without having to touch it at all.