This was really helpful - thanks! It would be great to reference the elements directly, but this is a nice workaround.

There is some method to the madness! We make heavy use of context data in our applications, and those use a namespace - so all our custom dimensions on iOS/Android/etc look like "foo.XYZ". We mirrored the format of our dataLayer object to the context data we use on our applications (which make up > 90% of our traffic) - that way we have a consistent descriptive framework for all of our data (which makes QA easier, for example).So, we don't want to change the DL, and transformation would be a bit...

I did, and it didn't work unfortunately! It's to be expected really, as that would be syntax to reference the value of "bar" in an object structured like this:{ foo : { bar : 'example'}}...