What if the liberal government that Lloyd George was a member of before the First World War had done more for Wales, and have Lloyd George do more while Prime Minister. For example:
Have the prewar Liberal Government, as well as disestablishing the church of Wales also introduce Welsh Medium Education for Welsh Speaking areas (remembering that nearly 50% of the population was Welsh speaking.) Also have Lloyd George, when grouping the railways, have all the Welsh railway line be grouped into one railway company, possible Cambrian Railways.