A perennial challenge of the #opensource universe which now is inherited by the #fediverse too, is the lack of good user interfaces. At best they are poor imitations of some proprietary original.
This hinders adoption and differentiation, as the majority of people are used by now to slick, streamlined experiences.
The problem is of course that whatever shaky economics applies to open source developers, does not apply at all to #ux / #ui types 馃様