Calling HITMAN a crappy live service thing is hardly fair. True, the always online part feels really unnecessary, but beyond that it is a stellar single player game with the best Hitman gameplay of the last two decades, a large selection of excellent maps with variants and extra missions, as well as a really impressive rogue-like mode added later for free.
The elusive targets and seasonal content can be completely ignored, and the game would still be a major milestone in modern singleplayer games.