Thus allowing you to add source files from your IDE, or rearrange them on disk and it’d just pick up the changes. Maybe the few per-file options that matter could be set from a comment in the file…
So instead of:
add source file in projucer
resave
rebuild the whole thing
You’d just:
add source file in IDE
?
Maybe you could just add a folder and tick a box that says ‘track contents’
OT: In my project all sources are organized as modules. Thus I don’t have to open the Projucer when i add a file, and thz file is automagically added in the IDE (at least in Xcode). Just have to add the proper include directive in the module header.