What is the reason for your optimistic tone regarding Belgium?
In 1990, in 1999, in 2002, in 2003 and in 2014 the institute Ispo polled amongst Belgians.
In 1990 more than 60% of the Dutch speaking Belgians (3/5 of the population) did favor the monarchy.
In 2014 between 40-35% of the Dutch speaking Belgians (3/5 of the population) did favor the monarchy.
In 1990 only 40 % of the French speaking Belgians (2/5 of the population) did favor the monarchy.
In 2014 more than 60% of the French speaking Belgians (2/5 of the population) did favor the monarchy.
It means that the support for the monarchy is under 50% given the dominance of the Dutch speaking part. The rise in the traditionally far less royalist French speaking part is no genuine love for the monarchy but an expression of the French speaking part clamping themselves to the State (read: the mechanism which ensures that billions are transferred from the rich Dutch-speaking part to the French-speaking part).
So your optimism regarding Belgium is a little bit out of nowhere.
Koning is zijn Vlaamse meerderheid kwijt - De Standaard Mobile
https://www.rtbf.be/info/belgique/d...t-plus-royalistes-que-les-flamands?id=9454663