Mozilla has seen declining contributions from non-employees over time. A mixed-methods study found that contribution is growing for some projects like Rust but mailing lists are less used as platforms divide. Contributors feel things change without input. Diversity also impacts contribution. To address this, Mozilla formulated a strategy of "Open By Design" to bring staff and contributors together, focus on diversity and inclusion, advocate for projects, and improve contributor experiences. This led to over 30 new projects and initiatives to revitalize open contribution to Mozilla.