Can Labour work with EU to reform ECHR? it's essential for them to counter the threat from Tories/Reform to leave ECHR

Options to increase tax on dividend income?
And increase CGT to income tax rates?

Labour now have a clear policy to fight against Reform/Tories. In 2029, people will have a choice to vote for Labour to continue with Brexit reset policy or vote for Reform to go back to Brexit and lose the current economic benefit/growth. Labour can win that fight especially with tactical voting.

Reform and Tories will have an excuse to form coalition

You want to throw that away and let Reform bring back hard Brexit?