Not required anymore. Today, the normal way is to use systemd timers.
However if you want to use a crontab to schedule tasks, install the cronie package. It is a good implementation of cron.
I don’t know which other packages you are missing. vi? Well, I am certain some kind of text editor is installed, maybe a more user friendly one.
You list the hostname command in your first post. Since it is replaced by hostnamectl, I also do not see the need to install such legacy and deprecated package like inetutils .
But the packages are available and if you need them you can install them.