The Canada-UK union in any shape or form is currently being decided as no right now. However, we're in talks about the reason as to why we want this, primarily its about the Canadian player being penalized for accomplishing a great goal, fulfilling a strong foreign policy and liberating the United Kingdom.Best case scenario for Brittania is a series of puppet states. A feasible mechanic for this would be something like
-annex Union
-change name to the United Kingdom
-change flag
-liberate Dominion of Canada as puppet and ally
-lose cores on Canada
A great compromise is to create a UK without penalising Canada to a great degree since let's face it, Canada was greatly boosted by the British exiles in the KR lore. Although it was a decade or two ago, losing them since they're going back to Britain will inevitably cause problems, that is unavoidable.
The primary issue with this entire debate is that players feel cheated about the whole affair since some play via a 'mathematical' aspect as opposed to a 'romantical' aspect, where people play to win, rather than play to a story for instance. I'm a very strong advocate of the latter. Canada does need a penalty, but it should be rewarded in the long run. To a point it is, the UK AI is very aggressive, builds Aircraft Carriers and given about 5-8 years, will wilfully invade France no matter what is there. I've been experimenting in putting the UK ai into the UoB with moderate to negligible success.
If you want to play to win, Canada is not your nation without SWITCHING to the UK via save/load.
If you want to play your part, play Canada and serve the British King, since that is the Canadian role.