I can appreciate that desire, but the sad thing is I don't think we have much influence. Scotland has been rejecting the Tories for decades but it hasn't stopped them from getting power.
I really don't know what the result would be. Sadly I think the main motivation for Brexit was fear of immigrants, and I don't think Britain has any become less xenophobic since 2016.
Maybe the economic damage has been enough to override the bigotry, but I wouldn't like to bet on it.
I think for a lot of people Brexit has become part of their identity, like a football team. It's entrenched, they spent so long arguing for it they'll never change their mind, regardless of the evidence they are presented with.
The fact that the Tories and Labour are both commited to being pro-brexit doesn't help.