I'm still hopeful that Labour are playing a game of adopting positions that pile pressure on the tories. The tories long for the day they could attack Labour on their remainer approach. In the absence of such discussions many tories are just left wondering why they have tanked the economy through such a harsh brexit. The kite flying last weekend was evidence of tories putting the feelers out for a better EU relationship.
Long term Labour members will force the leadership to adopt a pro EU stance.
These graph below explain a lot IMO.
Look where the black dot is. Those are people who left Labour to vote for the conservatives in 2019 and they are people Labor needs to win an election.
On other issues ( ie economic policy) the black dot is much closer to Labour than the Conservatives, so if Labour adopts a 90's/00's immigration policy, they will lose the Brexit voters again. If they mirror the government they stand a decent chance at winning voters back with other policies.
As always with this Labour, we don't need them to be perfect, we just need them to win. There are more than enough proper labour types in the shadow cabinet to make a difference when they're in power.