A medical room is a special room with your medical supplies, a doctors office type closet, bunk or bed depending on how sick you can be. And supplies from a medical kit to defibleration equipment. Technology allows for most of the diagnostics to be incorporated quite easily and if one can have access to a house call from a doctor, or ones own doctor or even a remote doctor, a safe place for treatment, one can always hire a registered nurse. If when need be. With quick dial emergency links etc...
A communications room used to be the radio room, but a telephone booth to a now Skype or video telecom booth. Radio, telephone, Skype, Facebook, text, while most of this is possible to some extent with a mobile phone. A properly configured comfortable chair, not a computer chair, a screen and good camera, high speed links, ham radio, CB, Phone tech, VoIP, good audio good lighting. Again much overlooked, not always expensive and not requiring a lot of space. Makes those long family phone calls so much better.
Although I have been thinking of putting together a Skype for Christmas, link my Northern Family to my Southern Family, although the 15-18 hour time difference to Australia can be a problem. However a Skype Christmas Eve, Christmas morning is the idea. Can also add other friends without needing the Christmas party and travel problems we get up here where it is truly cold. Alas setting it up sounds easy but never is.
One supposes a living room / family room / communications room might be a solution. But again is a different kind of solution.
I like the idea of reception rooms, again a foyer serves this purpose especially when cold answering the door for various purposes, be it missionaries, yes we have a lot of those in Canada. I get visits 6-8-12 times a year. Usually jehova witness or Mormons. Jehova witness switchedfrom the stoggy old ladies to the two or three very photogenic ladies, not sure if they hirethem or just luck out with their congregations. The Moromons send pairs of fit young guys willing to volunteer to help move stuff lift stuff, yard work etc... you can see them miles off, in their suits or cool long sleeve buttoned to their collared shirts. Add in the telco guys TV internet door to door salesmen, etc... And charity people. Lawn care companies snow shovellers etc... A porch might do this in warmer climes. Sometimes you just don't want to invite people in other times you don't want to ignore or freeze standing in the door. Although screen doors help, and the ever more popular camera at the door is handy too. Especially with the shifty types.
I suppose what I miss most is the milk chute. Yes we in NorthAmerica don't get milk deliveries any more. In England it was a great surprise to find the milkmen working full force. They even are green to the extreme. Electric milk trucks, glass milk and juice bottles which are washed and reused, and my milkman serviced the ladies at least six of them on his route on different days. It was only when he brought his kid with him to work that he was early for my morning delivery.

Milk chute would work good for parcels too.