If parties is the wrong kind of electoral reform in your mind, what do you think would be?
If i voted for an NDP, MPP, specifically because I liked their party's alignment, and they went to cross the floor, the party that they are now a part of doesn't align with the core fundamentals of the NDP. The proper action would be to hold a by-election, so that the floor crosser could attempt to be elected based on the MPPs new parties views.