In other words, will professors find the possibility of making extra $30k exciting enough to change their attitude? If the answer is no, then perhaps this is not a very good way to bring more niceness to the classroom.
Even if the answer is no, this can still have a positive benefit. Profs with an extra $30K might use the money to be more productive (i.e., by hiring extra researchers). More productive profs are more likely to succeed in academia and thus more likely to select profs with similar values when their department hires new faculty.
On the other hand, $30k is nothing to scoff at for a US academic - academics are paid vastly less than programmers (depending on the markets, I could get 2x-3x what I got last year). It's my understanding that Israeli academics are paid considerably less than US academics. So $30k could be a very strong incentive.
However, the only people who will really change their behavior are the 16'th and 17'th nicest profs at Technion, since they are the only ones who really have a shot at moving into the "nicest 15" category.
People only bother to pay attention in edge cases - if faculty X wants to hire applicant A, and Y wants to hire B (where A,B are equally qualified), X might get desperate and point out that A is a good teacher and has a prize.
A university education is supposed to be challenging, but shouldn't be impossible due to life circumstances. A university education should also be just that, an education, and not a grueling path taken just for the sake of being difficult.