There is no reason to use both Vault and Smoke Screen in one build. Neither has a CD, and both do the same thing. Your lacking on control quite a bit as well.
Crit builds will not match a build that isn't based around it, even if they make crit more worth while to stack it simply never ends up being as good as going other routes. If there is a good amount of crit on your gear then so be it, but it's not worth going after. And the boost from Archery is pathetic for it. it's better to go with a 2h xBow with it. Sharpshooter is crap, you'll either not have enough crit to make it worth it, or you'll have too much. I expect there to be a pretty low cap on crit chance. Probably no more than 65%. And unless sharpshooter is allowed to pass the cap it looses all it's value.
I agree that they will probably be removing Fundamentals, its really weak. Compared to the Wizard Virtuoso which is the same thing, there is no reason to use it, it only returns 4 hatred which you can get out of ES, while Virtuoso gives a wizard 15 AP.
Here's the build with a few changes. Your passives all needed changing, there is no way you'll be getting use out of Brooding either.http://us.battle.net/d3/en/calculator/demon-hunter#eWSbQi!Zca!YYZZYZ
You had NO AoE in there, Strafe allows you to move while dealing a low amount of damage, but with the lack of control you were going to get eaten alive. This build has more control, and better AoE damage, but you still lack single target. But you may be alright, Multishot will still do decent damage to a single target, and so does chakram.