Double post, but unsure if anyone's brought up game preservation for most modern games with DLC. It feels like not many games include post-launch DLC after the servers/store removed them to the point of being inaccessible. I would be willing to repurchase a game (as long as it doesn't quite mean I have to redo the main game/story) if it had all the DLC included despite the ended support for it.
For example, I really enjoyed playing through Forza Motorsport 4 and the original Forza Horizon, but wish I could access the DLC packs they had taken down from the store. There used to be GOTY editions of games that would include all the updates/DLC on the disk without having to find out that you can't access it after being taken down from the Xbox/PSN/Nintendo store. For something like FH1, I wanted to try out the rally DLC and some of the cars that never saw any other Forza game since FH1 or whichever.
My brother and I enjoy playing driving games that have a licensed car that somehow only showed up once in a series or ever in a proper game. (Proper as in something that isn't a cellphone game like the shovelware like "3D parking" or "Extreme parking 3D" crap) Something like FH1 being the only Forza game to have the Toyota FJ Cruiser or FH5 being the only game to have a regular Infiniti Q50 (later Forza games had only the Q50 Eau Rouge concept), but they were only for DLC and now inaccessible due to the DLCs being taken down.
Racing games are just an example, but for content like that, I'd like to be able to experience it even after picking up the game years after it's support ended. Frustrating as someone who wants to play with a part of the game that is no longer accessible, especially nerding out on cars that only saw a AAA or AA game once and never again.