Although their quota for 2017 will definitely exhaust soon and they do Not need to issue new Noi' s, but oinp clearly stated that if the quota will exhaust they will issue nomination to the registered applicants in early 2018.I don't think they have enough 2017 quota left to be issuing any more NOIs in 2017, given the low number of nominations left and the high number of people like me who missed out on the July 25 deadline and have been waiting every day for this reopening to submit our applications. And given that they say any NOIs issued from now onward will expire in 45 days or on December 31, whichever is sooner, I think they are not trying to get a head start on 2018 but just trying to fill the 2017 quota while being willing to hold extra ones for 2018. However, CIC and OINP have shown themselves to be unpredictable, so who knows. In any case, they will resume issuing normal NOIs in 2018 (i.e., valid for at least 6 months).
So even if they issue NOI and allot only 45 days time period for submission it will not be a waste they will definitely issue nomination in early 2018
Therefore when anyways it can take time till early 2018 the ones above 420 can wait to see the crs trends and apply oinp in 2018. Hopefully by then there are great chances that crs could fall down.