What I observed so far in the world of FOSS. Developers generally don’t want ideas for them to implement. 

If someone has a design idea, they need someone to PR the project and do it themselves. And the dev team can then accept the change if they are convinced. 

Which is of course very difficult, because people are experienced in different things. You can’t expect a designer to write code, nor a dev to design. 🤷‍♂️