Custom emoji reactions, bookmarks (though I wished private bookmarks were there too), zap fallback to 'scan to pay', when your wallet does not provide NWC yet, a less 'oppressive' color/CSS config, so that things like the "dark reader" extension can do its customizing job with ease. Finally a more harmonic UI overall choice, but that is minor and of course a matter of taste. Thanks for asking and for the great client!