@contrail You may have a difficult time finding people to interview about PFC because there has been a lot less OpenAg community activity in the last 6 months compared to 2016 and 2017. All of MIT’s previously released PFC designs–v1, v2, and v2.1–are officially unsupported now.
The community designed MVP PFC is the only one that’s currently active. [edit: The community designed MVP PFC is active, but it’s not an official MIT design. There are also several other interesting hydroponic and aeroponic projects people have built and documented here. But, those are also not official OpenAg designs.] People have been waiting to hear from the OpenAg team at MIT about their new designs, but they have been mostly silent for months.
Since the OpenAg team’s update announcement back in March, there have been some interesting instagram pictures and github commits, but, beyond that, it’s not clear what’s going on with the new PFC designs. For background, see this thread: Update from OpenAg - Please Read. If you look at the bottom of the first post, there are links to related threads with additional context.
You could try contacting Caleb on twitter or instagram (calebgrowsfood). He sometimes responds to people there. You could also try reaching out to David or Paula from the OpenAg team (see https://www-prod.media.mit.edu/groups/open-agriculture-openag/people/).