I would love to see it be their #1 demand. If they did it, it would probably mean you'd never see another Liberal majority, but I think there's a good chance that you'd see more left-leaning people elected. It goes against the interests of the Liberal party, but it might be in the interests of many of the things Liberals say they care about.
If it did pass, it would make voting "anybody but Conservative" much easier, which might really hurt the cons, which might cause them to split. That would be good too. Right now the conservatives are a bad alliance of small-government types who want to cut taxes and cut spending, and big-government types who want the government to go after anything they see as "woke" or "DEI". It would be much healthier if those two could be split from each-other.