I don't think CEC draws are anyhow related to VACs closed, or anything related to that. Instead, I think it's all a matter of: what will happen to someone who has their visa about to expire, and simply can't leave the country because:
1. There aren't any flights available to their country; or
2. The flights costs the same as a 2010 Civic?
And what about countries that have closed entirely their borders? How these citizens would return to their countries at all?
So, I believe CEC draws are meant to help Canada avoid that situation, where they would need to accept "illegal" people inside their territory, simply because they couldn't leave and their study/PGWS visas have expired.
So, I really believe we'll only get back to general draws once aviation reboots. Seriously, I think it's all about availability of flights.