I think two party systems and FPTP need to go. In both UK and the US.
What I favour is Mixed Member Proportional Representation. Like NewZealand and Germany. But I want it PR mixed with Score/Range voting rather than FPTP.
The UK also needs decentralizing and federating. Maybe break up England into units similar to Scotland, Wales and NI.
We tried, but the same party now bleating that a Labour supermajority would be bad for the country was then obsessing over the cost of having better voting, thought we needed more bullteproof vests and incubators, and that majority governments made countries stronger.
I don’t expect it to come up for review again under the other party in our two party system. What we were being offered wasn’t fantastic, but it was better than what we had, and will be used as a stick to beat anybody calling for another referendum into submission.