As to what peoples are thinking, the basic is that the level of both knowledge then understanding are variable between peoples.
Technical skills go with basic, as using the engine, generate images and write the story.
Then, images content then design can vary a lot.
Renpy to conclude, they are some bonus code adding in features. Names saves, more save slots, text box background transparency etc.
As it is, the developer knowing about these are very limited. Why is easy to, looking for information take time and energy.
This even if, given here, they are plenty of discussions and even guides as to specifics.
