'Add column(s) from other OpenRefine project' as default feature

I have the impression that joining projects (adding one or more columns from other OpenRefine projects based on a specified key column) is a very common use case. I do it a lot myself and have the impression - judging from the many explainers and tutorials online and the consistent feedback in OpenRefine's user survey - that many users also frequently do it.

Whenever I need to do it, I always end up Googling how it should be done and then doing the puzzle of constructing the intricate cell.cross('arg1','arg2').cells['arg3'].value[arg4] construct; writing down the exact project name, column names + debugging when I inevitably misspelled something. It's not the most pleasant thing to do.

Proposed solution

Add a default feature to OpenRefine with a dialog window that allows users to do it without having to look up the GREL function.

Additional context

I heard that the VIB-BITS extension has this feature.