Not here trying to pour cold water on anyone's positivity, but it's pretty unrealistic to see the ITA cutoff drop below 400. Just take a recent university graduate for example: newly graduated with a bachelor's degree earned in Canada but no work experience. The score would be 391: (age 110 + education 120 + language 136 (assume CLB 10 on all the four skills, which is realistic for a graduat received 4-year English education) + 25 from Section C education).
Now, here's the reasoning: if candidates with such qualities would not be accepted under the old immigration system, then why would the new system accept them, given that more and more people are thinking to relocate to Canada, which automatically raises the bar.
In my opinion though, the ITA cutoff will drop in the future, but unlikely to cross the line of 431, which is the score for a master's graduate with no work experience.