This was by far our most popular Expansion Card request. We've actually been working on it since before launching the original Framework Laptop. It's just a non-trivial packaging challenge, especially to land 2.5Gbit support.
nrp: “Unfortunately, Realtek is the one and only choice for a USB 3.1 to 2.5Gbit Ethernet controller. We don't like it any more than you do, but there are several niches in the PC peripheral space where there is no alternative to using a Realtek part.“
