"I can simply download my configuration, load it in the current session and start using all my scripts, aliases on a remote host in less than a minute" Nothing

"I can simply download my configuration, load it in the current session and start using all my scripts, aliases on a remote host in less than a minute" Nothing's stopping you from uploading zsh itself to your remote hosts along with your .zshrc. Or just use the package manager to install zsh on those machines. On any modern Linux distro it's as easy as typing something like "emerge zsh" or "apt-get install zsh".