And that's okay. Personally, I'm thrilled by the idea of a new shell. I don't plan to use Crush in production (yet?!) but I definitely plan on installing it on my laptop.
I'm excited to see how things go. I understand, for a while, it won't have all the bells and whistles of zsh. But that's okay. Everything has to start somewhere. I remember back when alacritty didn't even have easy scrollback!
Best of luck to Crosh and its author, liljencrantz!