There are gamemodes such as surf but the game hasn't even been released yet so there is no point of making mods yet.
What about SDK, like the maps.
They released a beta for the SDK but I haven't heard anything about it since this http://counterstrikego.com/threads/cs-go-beta-update-4-27-featuring-sdk.456/ update.
The website has been really quiet lately Dev wise most likely because they're putting the finishing touches on the game.
finishing touches? the game is nothing near finished it's in a terrible state. Counter-strike condition zero all over again....
There really isn't much wrong with it. The only major problem is the sounds (the footsteps are absolute trash) but other than that it's virtually ready for release.
It's got loads of problems. Stupid annoying tracers, crappy fog on the maps even the player models are bad at times i can't tell who is a team mate and who isn't. Weapon models are to big and annoying (pistol animations are crap) and then the sound as you said is horrible. Flashbangs are to strong seriously and the pistols are bad ( the deagle being the worst) and don't get me started with what they did to the maps i mean look at de_nuke and train. And then you get that stupid blur shit when you zoom in with the awp or scout.
This game will last 1 years tops that's it. It's horrible i have had more fun in 1.6 and css than this game combined. The pro players have even gave up on the game and this game is getting released next month. It might be fun for casual players like your self (idk you mabey even played competitive) but for people like me who have played competitive counter-strike in such leagues as ESL and ED i can't see the game working out. I don't mind counter-strike having nice fancy graphics and being updated but with crap gameplay like this and all those problems as well as the devs not even listening to the community the game isn't worth my time.
THE QOUTE TRAIN MUST CONTINUE! I have a few things to say here, IT'S A FUCKING BETA! The whole point of having betas is so that players can give FEEDBACK! OF COURSE IT'S NOT GOING TO BE FUCKING PERFECT THAT'S WHY IT DOESN'T GET RELEASED FOR A MONTH. Most of this can be fixed relatively easily but it isn't 1.6, it isn't css, it's a different game. None the less when it does get released someone will make a pro-mod for you hardcore bastards...