I'm perpetually in the process of beating this dead horse, but FOSS would have so so many banging gold-standard user-facing apps if they enlisted the help of experienced UI or maybe UX designers and really worked to make them part of the community. To do their job right, they need to talk to the community to figure out what their needs are, and if maintainers shrug their shoulders while the few people who speak up are skeptically bikeshedding everything they say into oblivion, then we're also going to shrug our shoulders and walk away. That's what happened to me the several times I tried to contribute to various FOSS projects as a(n experienced, professional) designer rather than a(n experienced, professional, former) developer. Often, the response you get for merely intimating that something could work better if it was set up differently is like calling someone's kid ugly.
It would be like a team of civil engineers working on a restaurant design scoffing at an architect that specializes in restaurants offering to help make an effective kitchen layout. From the civil engineers' perspective, the architect's input is superfluous and would probably slow down progress. Meanwhile, everyone else that has to interact with that kitchen suffers.
