Add APIs to allow using native DLL functions for custom columns

But those parts (VFS and Viewer, right?) are way more complicated with way fewer potential users. I also wouldn't touch those, but then if I could copy&paste someone's template and just plug my couple of dozen lines of logic similarly to how I did it for all those JScipts to get a column or a button command, then it's a totally different level of "approachability"

But then as questions like these How to use plugin add column illustrate, there isn't even a single example!

Besides as you've noticed in the C# post:

Sure, but this also didn't happen, besides being a less flexible option in general (like putting a limit on the number of people)