You should read the following comments I made before when this was first suggested.
You should also note the intention of BL to maintain compatibility with OpenSCAD.
Essentially, if OpenSCAD doesn’t have it(it doesn’t), neither does the MW implementation.
As @ozarkexpeditions pointed out, my own QR Code OpenSCAD model would greatly benefit from this idea.
My new imminent update has massively increased the number of customisations available and some are only available if one option is chosen,
I feel the pain the lack of this option gives. It just isn’t going to happen.
I can imagine this would be possible, if the name used is identical to the name of the script for example.
Not this though as OpenSCAD doesn’t have the option and it would require processing the run code which is not something MW is actually doing themselves.