Hi,
which Blender add-ons would you recommend for add-on writers to view source code, as an example of well written/implemented add-ons? Maybe something a bit more complicated than those in text editor --> Templates.
Probably the ones written by Blender’s core dev team (that don’t have things like “XXX” or “TODO: fix this!” written in their code). There’s also “add-on like” code in Blender’s “scripts\startup\bl_operators” directory.