This paper is deliverable 4.4 of FAIRsFAIR task 4.2 “Build a European network of FAIR-enabling Trustworthy Digital Repositories (TDRs)” within the FAIRsFAIR Certification work package (WP4). The objective of this task is to build a European network with respect to FAIR data in FAIR-enabling repositories. In this deliverable, FAIRsFAIR advocates for and explores the idea of a European network of TDRs (now) and suggests possible future expansions in scope (later)