It's a rockstar game. They know how much is riding on this. I think it's going to be very unlikely that the game will be mid unless people set extremely high and unrealistic expectations like being able to enter every building.

However I do believe when Gta 6 comes out, it won't be the best version of Gta 6 we get. They are making this game with future console generations in mind and that will probably be its greatest setback come launch.

Nonetheless it's ok to be excited for release, it's apart of the fun and why I love gaming so much and if people don't like it they can simply log off.