Do you think the CRS scores will go below 440 this year and have a similar trend to 2017?
Hard to say.
Unless they increase the number of invitations in each round (3900 lately), scores are likely to stay around where they were in 2018.
They might increase slightly the number of invitations issued in each round though, considering the higher target of 310,000 for 2019 instead of 300,000 in 2018.
But still, I wouldn't expect cut-off scores to change at all, considering the huge ever growing number of applicants in the 401-450 points range... 31,972 on January 17th 2019.