Strong focus on privacy and security (all authentication with the Lemmy API is done through secure httpOnly cookies, user IP addresses are not leaked to external image hosts, etc)

Awesome. The current lemmy-ui sends a lot of traffic to other Lemmy instances to get pictrs-cached images, so this is huge improvement. On the other hand, on next.lemm.ee those requests seems to be gone. As feedback, I noticed this page still seems to send a request to imgur, and the text is difficult to read because of the low-contrast theme.