Lots of users enjoy playing with pin and socket boards and for them the larger boards - like the Mega and Uno - are fine.
"Chapter 2" users want to embed a cheap board that is hardly more than a large DIL package with serious speed and memory. They want to build useful - very often portable - devices.
Download, Google to debug, solder, USE!
The full Arduino experience but with small STM32 ARM boards is the goal I would humbly request from the developers forum.
The Maple Mini clone and your small generic are all I ask for - but as always people like me want the quick results that lots of working libraries offer - all fixed for next winter....
Go, developers, Go Go !!!
(with sincere thanks 
)