As someone who has played CS on and off (more off in the last few years) but started with the first game in 2000-2001, I'm hyped for CS2.
Don't really agree with any criticisms that they need to revamp or change more, CSGO was pretty close to perfect as it was, aside from a few things like server tick which they seem to be greatly improving with this as well. There will always be new maps but the old ones will always be classic for a reason and all I really need would be Dust2, Inferno, Cache, Overpass, Mirage, Nuke and maybe the occasional Train. Of course getting a new map here or there seasonally that is fun to play is not a negative but it's really damn hard to design a great map. These maps have become great for a reason and it's hard to make a new map that's 1. unique to itself and has a different vibe than other maps 2. still is greatly balanced for both teams (this is a big challenge) 3. holds up over time and doesn't get boring after you have played it 10 times.
I'm just happy they are keeping a lot of gimmicks away from it and keeping it a pure tactical FPS shooter. It's about the individual player skill and the tactical element like the ingame economy and so on.