It would be nice if it was again possible to run it in current Mac OS. The original Half life still lists Mac OS but with incompatible information (newer versions of Steam require recent versions, but HL only runs on old 32 bit OSX)
The reason I asked is that macOS no longer runs 32-bit apps natively. So If they haven’t taken the time to make these 64 bit, there’s no real hope for a Mac native port again.