Layout reporting of the mapping of layout field instances to their field source

[watershed]

I’m very much appreciative of Craft 5’s multi-instance field capability whereby:

Most fields can be added to a single layout multiple times.

And that any field given a layout-specific label and handle can be inspected in its slide-out to see what its canonical source field is.

However, when building out layouts with many fields, and then entry type variants that derive but also diverge from such a source layout, seeing the wood for the trees involves clicking into each layout field definition to check what its source field is.

When editing a layout there is, by default, an under-utilised layout meta area on the right (on wide viewports) which could report a mapping of layout-specific field name to source field name:

For example, suppose source fields such as:

Handle	Field type	Settings
singleLine	Plain text
multiLine	Plain text	Multiple lines
htmlStandard	CKEditor	‘Standard’ config
switch	Lightswitch	OFF
switched	Lightswitch	ON
codeMultiLine	Plain text	Multiple lines and monospace

…and a layout which deploys:

Layout field handle	Source field handle
firstName	singleLine
lastName	singleLine
jobTitle	singleLine
bio	htmlStandard
manager	switch

…something like the latter table could be reported as read-only information in the layout meta area, thus making reviewing and managing layouts a little easier.