Good topic but missing some context, like if you write second flag: Luxembourg, what is that, citizenship, residency, bank account? Also the reasoning behind why that particular country / jurisdiction etc.
Also are we talking about an ideal setup or our current one?
Anyway, here's my ideal one
Citizenships:
Origin
one in Latam (Mexico is good)
one in the Caribbean (would only use it in caricom region anyway)
Residency:
UAE (business),
Thailand (net food exporter, good climate, cheap, different vibe)
Mexico (no restrictions and can work towards citizenship)
Business
UAE as holding + jurisdiction of choice depending on business
Banking
Singapore (wealth protection)
UAE (transactions mostly and smaller amounts)
Switzerland (not sure yet if redundant)
Places to spend time /︀ live / enjoy
Winter - UAE + Asia or Latam
Spring and Fall - Mediterranean︁
Summer - Home country and mountains
P. S. I'm not sure if non-EU citizens should︂ even aim to get an EU citizenship, it doesn't bring too much these days and︃ EU has a grim outlook.
Anyway hope this adds some value and happy to hear︄ your thoughts.