I think CS:GO will be a massive hit, it's quite refreshing these days, where it's all about skill and there are no noob tubes in sight
The game is so smooth and the aiming as accurate as ever, it's like 1.6 with a new engine. The weapons are as fun as they used to be, they just have major recoil, so no spray and pray happening here
I think it's going to be epic online, as long as the servers are stable and hackers are kept at bay
I think the biggest positive is going to be community input, which is lacking in most of the popular games these days, which causes many users to lose interest due to playing the same maps and modes continuously