@julianstirling and I are currently drafting a report regarding the third phase of the OKH project - Interactivity. Following from a few conversations, we are investigating a shared definition of interactivity (which you might call 2-way portability) as well the technical barriers to development, in order to make recommendations.
This is a companion discussion topic for the original entry at https://community.internetofproduction.org/t/okh-interactivity-scoping-report-rfc/554