How much have you played your DH, and how much have you used SS? You do realize that even though you become invisible and invulnerable, and that even though the mobs arent supposed to be able to see you, that they CAN STILL SEE YOU, and will actually continue to CHASE you for around 2 seconds after you vanish right? With a skill like SS that costs loads of Discipline, it is very very very very very very VERY likely that you can vanish for 1 second and not be able to get distance on whatever lept/burrowed/vortexed you in Inferno.
The fact of the matter is, the skill should be useable even without the lingering fog rune. It should be effective at 1 second, but its really not. And two is moderately effective at best. Someone not being able to get range during the duration of SS isnt always 'their fuckup' friend, thats just the way the game is working. If mobs broke off of you immediately upon use, then maybe you would have a point.
One second is still pretty effective not just as an immunity shield but as a CC break. I do think this change should have also been accompanied by a lowering to 12 Discipline (with Secret Recipe pushing it down to 10) but all told that is not a deal breaker.
If things are still chasing you immediately after hitting SS and for the duration, you're probably solo (or at least duo and your partner isn't near enough). Your build should reflect this, whether that means running Tactical Advantage, or Evasive Fire with Displace, or Vault or some fucking way to create distance quickly on demand. If it doesn't, that's on you to fix it. SS alone isn't and shouldn't cut it all the time.