Version Control Systems are pretty agnostic towards the programming language being used. The only important requirement for being usefull is, that the design elements of the application (in this case Notes Database) can be sliced in smaller entities.
Now it would be great
1. if all design elements (like notes-form, notes-view, notes-subview, notes-agent, etc) and resources could be converted into dxl.
2. The database could be reproduced from those dxl entities.
Both in a completly transparent way without requiring more effort from the programmer than the click of a button.
Then it should be possible to effectively use those popular version control systems for Domino development.
Often its critiziced that Domino is not being taken serious as "real development" (whatever that actually is) . A message that Domino is ready for version control systems would be great not only for making colaborative development more productive, but also for marketing purposes.