Hi Michael,
I've already had a look at OSPI, and I wasn't too impressed with what it provided. Please refer to https://openacs.org/forums/message-view?message_id=270277 for my evaluation of Sakai.
OpenACS already provides a lot more functionality in independent packages like file-storage (artifact repository) and weblogger (reflection). Which leaves new development for a graduate attributes matrix, portfolio presentation and standards compliance.
The only foreseeable integration with OSPI will be through standards (IMS ePortfolio/LIP). After enquiring about these standards with the OSPI team, it doesn't look like implementing these standards are on their radar just yet.
