I have decided against Aura because it splits the commands for AUR from the standard repos. With paru I can upgrade both by running just paru. In the end, that’s all I mostly do with an aur helper.

It also means that the rendering will potentially be different on each platform given they all use different native webviews (and there’s no “native” webview on Linux but WebKit-gtk is the most widely used one)

Not really. Helix is closer to Kakoune which is based on the modal editing of Vim but reimagined a bit.