Mozilla Corp is currently hiring a contractor to do precisely that.<p><a href="https:&#x2F;&#x2F;careers.mozilla.org&#x2F;position&#x2F;ohUW2fwT" rel="nofollow">https:&#x2F;&#x2F;careers.mozilla.org&#x2F;position&#x2F;ohUW2fwT</a><p>IMHO Thunderbird should replace:
- Gecko with Blink
- XPCOM with normal plugins (I don&#x27;t think anyone is making any real use of the unique features of XPCOM, e. g. the universal binary interface)
- XUL with QML&#x2F;WPF&#x2F;alike.<p>Qt would provide a full-stack alternative:
- Gecko -&gt; QtWebEngine
- XPCOM -&gt; QPluginLoader
- XUL -&gt; QML<p>Maintainability and performance would increase exponentially.