I think fish is great for newcomers or for those who don't really want to mess around with too many settings or plugins.
I'm a fish user, actually. That said, for those on zsh who want some of fish's most prominent user features without leaving, check out zsh-syntax-highlighting[1] and zsh-autosuggestions[2]. These are rather popular so long time users may not benefit from these suggestions.
Interesting. I also used fish for a while after looking at bash alternatives, but ended up with zsh, because fish had some (admittedly minor) inconveniences/bugs, and zsh felt more mature. But very soon I had to install the two extensions you mentioned because my shell felt really incomplete without them after fish.
My journey is the opposite to you, I started with zsh and those two plugins. It's good to have bash like syntax (easy for copy paste from the web), but the slooooooooow startup speed really annoys me, so I give fish a try and now I'm impressed by its speed and feature.
I'm a fish user, actually. That said, for those on zsh who want some of fish's most prominent user features without leaving, check out zsh-syntax-highlighting[1] and zsh-autosuggestions[2]. These are rather popular so long time users may not benefit from these suggestions.
[1] https://github.com/zsh-users/zsh-syntax-highlighting [2] https://github.com/zsh-users/zsh-autosuggestions