I think it could be worse than the status quo (which is saying a lot, since the status quo is pretty bad).
A lot of people lost confidence in "conditional immigration" categories (ie., we'll let you immigrate provided you become an engineer, an entrepreneur, pick grapes in napa during the harvest season and leave afterwards) after watching how these programs actually work (the H1B, in particular).
I had my own experience with this (as most programmers have). The company I worked for, a "startup", wasn't making much progress and had burned through a lot of cash. Investors and managers got frustrated. They moved the office a long distance and banned telecommuting completely. The took away private offices and put us into a cubicle farm. And, of course, they diluted everyone's stock.
So, what did I do? I quit. But I'm a US citizen, so I didn't face deportation when I did this. But the H1B workers, all Indians who have to wait longer than normal for green cards because of the longer queue, didn't quit. Of course they didn't, they'd been there for 4+ years, are they going to give up now, when they're so close to a green card?
So management pretty much got away with it. Well, they didn't, the company tanked 4 months later, but they sure succeeded in bullying the workers who lack freedom. And the thing is, while I did get to quit, if more and more workers are governed by this arrangement, then this sort of treatment will become the norm, and free citizens will not want to work in that field anymore (which I think is already clearly happening - I personally believe that Americans avoid engineering not because they're too dumb or lazy, but because pay and benefits in engineering are lagging behind other options for highly educated people who are free to pick a different career (1)
Personally, I'm certain that this visa will lead to widespread bullying of tech founders by investors who control their dream of becoming free citizens of the united states. That will be much worse than what we have now.
I can't get behind any type of conditional immigration. I've seen it in action, and I'm convinced these programs are utterly corrupt and end up making the environment so bad that free people will end up choosing other careers (exacerbating the shortages that the programs claim to remedy).
(1) Based on a RAND study
A summary is available here:
http://www.usatoday.com/tech/science/2009-07-08-science-engi....
The full RAND study is at:
http://www.rand.org/pubs/issue_papers/IP241/