There were geriatric sitcoms in the 70's, I'm pretty sure, though I can't quite dredge up their names off hand.
This seems like a natural, assuming that the Boomers still have discretionary cash to lure advertisers. Or perhaps their children would watch. As you know, there are some pretty intense emotions at this phase of life for all involved. Hilarity one minute, horror the next. Seems like something that writers and actors could really sink their teeth into.
When my mom was in the retirement home, somebody died every week. On one hand they were missing their friends. On the other hand, they were jockeying for the now-vacant bigger room with a better view. Sleazy preachers hanging around, trying to get them to sign big checks, or even get into their wills. People slipping nasty anonymous notes under each-others doors (pretty safe, when it takes them 15 minutes to get up and go to the door). Huge staff turnover - cheery enthusiasm turning to burned-out disillusionment in weeks. Mom's old cat eating all the dropped pills and cat food that was spilled behind the table, (as I later found out) going on weird trips and presenting bizarre symptoms to the vet every month.
Lots of comedic and dramatic material.