The UK is not going to be able to improve the deal it has with the EU very much at all. The long list of people and organisations who want the deal improved, from the DUP to the Musicians’ Union have left it too late. The government will make sympathetic noises, try to actually improve the administration of all that new red tape, throw some money their way and hope that they eventually stop complaining. But there is little else it can do, it isn’t fulling implementing the measures it has already agreed on yet, so there is much more of this to come, not less.
After 5 long years of Brexit the country and the EU are tired to death of the subject, which means reopening negotiations would be desperately unpopular with just about everyone and even if they were reopened they would not get very far. That’s because the biggest problem is the red lines that the UK insisted on. All else flows from that; there is very little wriggle room if they are not crossed. Tinkering at the edges and endless work in committees to smooth things out a bit is the best that can be hoped for.
The EU was very clear about this from the start, given those red lines the best the UK could expect was a free trade deal, that is what the UK asked for and that is what it got. The deal is done, move on.
https://jonty.substack.com/
As somebody not complaining - let's move on. The EU after Brexit show of unity is now imploding not a good idea to be asking silly questions around the forgotten edges as they now fight each other. Its a time to be quiet, get out of the way and let them knock chunks out of each other.