I'm suggesting that Directory Opus could have a full integration with GitHub.
Actually I'm a programmer, and the most common thing I'm currently ussing is GitHub. But I always need to change from DOpus to my IDE, to my IDE to GitHub, to GitHub to my IDE and my IDE to DOpus and so on.
I don't know how hard is it to make it, but if DOpus can have it, I would paid for it.
Most popular source control systems have shell extensions (e.g. TortoiseGit, TortoiseSVN, etc.) made for them that integrate them into both Opus and File Explorer.
You mean you want Git integration, right?
I mean you cannot interact with GitHub in any way other than cloning a repo down to your machine and then you work locally until you push back to origin / GitHub.
There are shell extensions for Git already (context menu entries allowing you to diff, log, discard etc..)
And if you want Git status in DO file display columns, there is a script addin I did. It's a prototype, but works quite well for me.