Implementing visual variable selector

Hey there,
has there ever been a discussion about implementing a visual variable selector like n8n have?

Additionally, it would be easy to display what kind of data went throught the nodes:

After my opinion in bigger flows it is easy to lose the overview over the variables in the message, this would make the process a lot easier and user friendly!

You mean like the output of the debug node? That lets you copy both the object path or the data.