IMHO: government will be making a lot of unannounced/unnounced adjustments to the program according to their needs/economical/political situation in the country.
For example they can stop issuing ITA for those who have less than 900 and start giving ITA to those 400+.
I will explain. Let's take this scenario:
45 years cook (Noc B) without education, low ielts, etc. but with lmia has 890 points - gets ITA - brings his wife and two kids and immediately starts getting benefits (health card, kids' financial support, etc) for the whole family. Does it help to boost economy? You don't have to be financial guru to answer: no way, he will be milking the economy. So looking ahead and taking into consideration that the main point of the program is to bring skilled, educated, qualified people to the country will make them to reconsider the real value of points.