I love Julia, but I feel two annoyances right now with the ecosystem.

Interactive programming seems to be having a schism between Pluto, a reactive notebook like Observable, and Bonito, a more imperative notebook like Jupyter from the creator of plotting library Makie.

The other annoyance is that the packaging ecosystem is tied very closely to Github and Gitlab as the only alternative, in an era where Microsoft is killing Github reliability, and many new projects are moving to Tangled (on the AT Protocol network) and Forgejo (with Codeberg as the flagship), which has no packaging support from JuliaHub.