We bailed on the effort before we would have gone there. We never even got to test whether the theme would be enough because we could not even get that much of an export in place. We also were an immature organization - large, with lots of funding and devs, but comprised of a collection of acquisitions the VCs had merged together into one company and brand. Which meant we all came to the table with years of history and custom code, and were just trying to find an easy way to apply a common look and feel before delving into whether we could evolve to share a full-blown design system. We did all use MUI so it seemed like a good idea at the time. But it ended being a fairly short effort, with a conclusion of: "No."