I’ve been thinking for awhile now that I don’t actually think Perez should be emperor. The problem is the lack of another candidate - the first prince is crazy and has zero self control, so he’d be worse than his greedy, selfish dad. Perez should marry into the Lombardi family. Then he’d have power basically as great as the emperor, and Tia could be head of the family without issue. I’m not sure if she could realistically be empress and head her family as well…
I know grandpa didn’t want Perez for Tia, but having a strong, intelligent man that is fiercely devoted to her seems like an ideal situation to me.