Raging Spaniard
If they are Dutch, upright and breathing they are more racist than your favorite player
Welcome to the House of Bourbon inbred depression or what happens when for generations your family fucks your relatives over and over.
In short: A fully federal state, who recognizes the plurality of the country and the nations inside it and give more and clearer competencies to the states. The whole fiscality needs to be redone so a fair redistribution of riches are put in place.
The current system is inefficient, because we just saw how easy is to override the region goverments institutions without even parliament approval. Is still highly centralist, that was the idea of it the system though, which is way is failling now.
I know is not enough, this is way more complex for me to fully explain.
Lets say a proper redistribution of riches takes place (Catalonia is not exactly the poorest part of Spain, as you well know, but I digress) and nothing else changes. Would you be happy?