Brexit is done, we are out of the EU, it's just the consequences of the EU reaction that still needs sorting.
The UK isn't in chaos, that's just wishful thinking on your part.
Nothing is a shambles, just as usual, there are always things to work on, and presently there is division on whether the present MP should continue.
Until someone better suited comes onto the scene it's highly questionable whether the disruption and high risk from further change would be of any benefit.