What do you think would be the key factors to drive mass adoption of D?

[MacAsm]

A few ideas that come to mind:

-   A truly ****batteries-included IDE**** (something on the 
level of Visual Studio for C# or IntelliJ for Java) — would that 
make a big difference? Right now the experience is mostly VS Code 
+ code-d + serve-d, which is decent but still feels fragmented 
compared to mainstream languages.
-   For corporate/enterprise environments in particular: do you 
think a modern ****GUI designer**** (visual drag-and-drop) would 
help a lot? Many teams still build desktop/business apps and love 
tools like WinForms Designer, WPF/XAML preview, or Qt Designer.
-   Alternatively — maybe a ****declarative UI language**** with 
live preview (something XAML-like, or even better: immediate 
hot-reload / live-reloading of UI + logic) would be more powerful 
and future-proof than a classic designer?

Beyond tooling:

-   Strong ****corporate backing**** (big companies using + 
sponsoring it)
-   Way more high-quality ****tutorials****, beginner-friendly 
learning paths, and real-world project examples
-   Active ****evangelists****, conference talks, YouTube 
content, and community momentum

What else do you see as important missing pieces? Better mobile / 
web / embedded? GC improvements or u/nogc-by-default push? 
Something completely different?

Curious to hear your thoughts.