Hate to dampen anyone's love for all things Canadian, but it highly doubtful that any more CIS schools will look to the NCAA. SFU and UBC are unique for reasons already described here and in previous threads - SFU was never comfortable in the CIS and bothy they and UBC want cheaper north-south travel as opposed to road trips half-way across the country to Winnipeg for the hockey team. And the UBC hockey team is simply not good. They are perennially in the bottom third of Canada West so they would not be giving up a lot to flush the team roster and find non-Major Junior players. UBC has convinced themselves, apparently, that the CIS limits on Athletic Financial Awards is the only thing keeping them from scooping up all of those British Columbia student-athletes who defect to the NCAA in all sports. UBC is a big school, and admittedly a good school, so I guess they figure they can find the money and will draw huge crowds against those no-name (to the Canadian public) Div II schools in basketball, hockey, football, etc. As we say here, its a west coast thing, as BC is the loony left of Canada, our California.
As for other teams, don't count on it. Maybe border schools like Windsor, but it is highly unlikely any of the Top 10 teams would make the move. I can pretty well guarantee UNB would not make the move unless the AUS conference and the CIS imploded. Why would they. The top hockey schools like their "partnership" with the CHL - Major Junior gives education packages to their players to try to keep them from going south to NCAA, and those players take that education money with them when they play for CIS schools. The level of hockey has never been better in the top CIS hockey schools. The CIS is not a primary development league, and doesn't try to be. In Canada that will always be the CHL. So the CIS just waits for players to finish their time in the CHL then come play for them.
However, join the NCAA and you've got to end your pipeline to Major Junior (which UBC doesn't/didn't do a good job with) and compete with tons of schools for Junior A players. Why would UNB want to do that?