I might the only person on the planet who feels this way, but I miss being able to use a slider to set the netmask:

https://tidbits.com/resources/iskm3html/pt4/ch17/ch17.html#a...

(the separate net, subnet, and node entries not so much)

You're assuming that everyone has access to a doctor, and that people who do have doctors will visit them instead of just looking at their phone.