Two holes in your theory though (at least if I remember correctly)...
Locke had already been screwed by his dad AND thrown out a window *before* Jacobs touch, so I don't know how you can attribute his bad life stuff to Jacob.
Hurley is a weird case, because he wasn't touched by Jacob until well after the island events when they were supposed to go back (once again if I remember correctly) so Jacobs meddling couldn't really have any affect on Hurleys destiny in the current timeline.
The only case that I possibly agree with you on is Sawyer - woth the Recon episode, maybe Jacob did not interfere and that's why Sawyer becomes a cop. But remember from the episode - "James" still isn't a "good" person necessarily. Being a cop was a means to an end. He might not have written the Sawyer letter, but his goal of killing Anthony Cooper was still the same.
[quote name='javeryh']Jacob is CLEARLY evil. So many good things have happened in the sideways universe when they weren't touched/influenced by Jacob. Jack is not an alcoholic, Sawyer is a cop, Hurley is a successful businessman, Locke is in a healthy relationship with Leela and knows his dad, Nadia is still alive for Sayid, etc. That is 5 of the 6 candidates that seem to be having better lives if they never came into contact with Jacob.
We still haven't seen the Sun/Jin episode and we don't know whether it is actually Sun or Jin that is the "Kwon" candidate but now I'm totally convinced it is Sun. The only glimpses we've seen of them in the alternate universe is when Sun is at the airport using her maiden name (meaning she got away from an abusive Jin) and that Jin was somehow involved with the gangsters that Sayid saved him from. Kate is not a candidate so that is why she is still on the run from the cops. Her life was not altered dramatically by not coming into contact with Jacob.
These last few episodes haven't been exciting or "OMG!" revealing but they have been pretty good within the context of the show and subtle character development.[/QUOTE]