if your integrating AAR please change the way Canada/UoB is. Out of all the nations i find this one the most unrealistic (except Qing) and ever so slightly offensive (i do mean slightly)
Canada was a British colony therefore they have no right to remove the king like they can do, it's hardcoded into their constitution that the monarch is the head of state. If anything anti British would come from Canada it would be from Quebec only. And of all the issue surrounding KR's possible alt history the simple acceptance of Communism in Britain is the second most unrealistic after the Qing dynasty managing to stay alive after suffering such loses to Germany. Scotland would have declared independence before they let a British republic exist and the King was very popular back then so civil unrest would have been common until it was restored or beaten out of them.
If i Could change one thing about KR it would be the UoB/Canada situation because i like the Qing presence even if it's very unlikely