Anglade's future should also be in doubt imo. She's not been a particularly strong leader (disappointing because I had hope) but no matter who leads the PLQ, they're going to have a mighty tough time building a larger coalition while not bleeding Anglophone and immigrant support.
The PLQ has a lot of issues they need to sort out and fast, cause they were really only spared this landslide cause Anglo/allophone and immigrant voters don't neatly fit into the CAQ or any other coalition at the moment. They are very much still needing to find a way into post-separatist modern political landscape. The PLQ are in a strange position of being the only party with a brand that can challenge the CAQ for control of government, but also have no feasible way back to government. If the map on the previous page didn't drive this home, their less than 10% voteshare off Montreal should. If a new (serious) party comes knocking for specifically the non-francophone vote, or QS is able to break past the federal Lib -> PLQ & NDP -> QS guardrails on Montreal then they will really be in trouble. The PLQ could also be in danger if some other party gains the perception that they can challenge the CAQ. Their urban base and history though can be beneficial if the party modernizes and finds a new approach for a new era.