My ideas for better Tropico 4 expansion or Tropico 5:
- possibility to build tunnels or/and bridges (against trafic struck);
- for religion: a chapel or a little church (only 1 priest); maybe a cemetary or crematory;
- for sanity: a dentist and a veterinary studio;
- for mine industry: gem mines and uran deposits;
- for industry: possibility to improve bauxite to alluminium (like in Industry giant); from lama you can obtain dresses;
- for agriculture: ranch for chickens; potatoes;
- for diplomacy: caribbean countries;
may be I will post later some orther ideas.