There may be many dissapointment aspects about this game, some things even unacceptable by today's standard, many dissapointments mainly due to how CDPR marketed their game; some of the marketing information and promises where a direct lie from their part, but some others were just... fiction, made by the fans themselves, fans who were so drowned by an immeasurable amount of hype surrounding this game, to the point where they themselves created an unhealthy amount of unimaginable thoughts and wishes hovering around their heads, this since the moment they game was revealed for the second time during that E3 event.
I've encountered many people who were expecting some next level shit, even an evolution to Grand Theft Auto V in term of interaction. Like being able to do crazy shit like you can do in Grand Theft Auto online, but with a Cyberpunk setting.. Yes, I know many people who had that level of expection, and they are found more often than you think. Yeah, as I've indicated above, CDPR has part of fault here due to their marketing wordings and mumbo jumbo, etc, but partly..
In my own experience as a person who was absolutely hyped about this game, and who saw every single marketing material, detail and gameplay demonstration, after seeing over their "Wooooooowooo choombas!! Fucck! Open world amaziness incoming!! be readyyy" material, what I just expected was a The Witcher 3 type of game in first person view, with character creation, a city instead of a landscape, and vehicules as a traveral method, just that. And I completely feel this is what I really got after playing Cyberpunk 2077 for over 70 hours. If you see the game like that, I don't see how can dissapoint:
Missions scheme, about the same, I'd say a bit deeper than The Witcher 3 in that aspect. World interaction, about the fucking same except the lack of an actual minigame like Gwent, and hairstyle stuff at the barbershop. RPG elements.... Same. The RPG here takes the same formula of passive perks like The Witcher 3 but going deeper. Now with the extra of a shooting & looting system added in there to give it more depth to the game and that is it. it works as intended in order to create a variety of builds; nothing astounding though. And then, the dialogues and decisions; same shit as The Witcher 3, nothing goes too crazy to the point where your decisions throughout the main campaign change drastically the predetermined path lead by the game, and in the end you just get multiple endings and some lore conclusion backgrounds after credits..
In conclusion, yes.. There are many things to improve aside from bugs and performance, the NPC AI, the laughable and non-existant police wanted system, some mods and cyberwares that don't work as intended, some perks that are totally useless, and that is it... They just need to add more content, maybe some contents that boost interactivity with the world like casino minigames, ability to change your character look on the go, car tunings as "main revival of cut features", new perks, new weapon classes, etc..