Dear Frank,
this is really great news for the OpenACS community! Thank you for this contribution to the project. I hope other companies using OpenACS will follow!
Of course, I would love to see more Project Open packages beyond the "minimal installation" being available, but this is definitely a first step into the right direction. Installing OpenACS has become a matter of minutes nowadays. I can very well imagine that being able to install Project Open on top of it with only a few commands or clicks (e.g. via APM's comfortable "install from repository" mechanism) has the potential attract new users / prospective customers.
Keep it up!
All the best,
Michael