If they really respect Canadians and appreciate the danger of conservative populism in this political climate, they should come to some agreement between the four parties to pull some candidates that are less likely to win from ridings where the conservatives are challenging them due to vote splitting.
I'm not going to hold my breath, I think the Liberals will be as selfish and entitled as usual since they see their support so high that they don't feel like they have to make any compromise and insist on running a full ticket, which basically forces the other parties to do so as well for their own survival.
It's the not electoral reform we actually want. Still, it would be a nice gesture and a step towards getting them to once again admit that FPTP is a horribly broken voting system that needs to change.