Only if #TeamFortress2Classic had some sort of future matchmaking, it would throw #TeamFortress2 on its ribs. Potential players could flood in at the appointed times, do raids and generally have fun without overbearing deserted atmosphere.
No, I want this feature RIGHT IN THE GAME, not some cesspool of a Discord server filled with "events". An ability to book your gaming spot on servers and times of choice.
Privacy footprint is small if you don't shove your entire schedule into the thing, so I don't see trouble on that end. Only technicalities and #matchmaking instance that would book the spots or others servers will need to have some tiny bits implemented. A matter of updating and opting in to future matchmaking. I'm definitely not asking all #TF2C servers suddenly have this by default, just those that allow such batches of players.