I think the Dutch should return in game!
Tiny country, tiny civ, but with some great contributions to history!
characteristics:
strong economy and diplomacy
immune to sea level rise and floods
ability to impolder land
+10 happiness from liberal law

+10 health (longest life expectancy)
+10 science
dutch inventions:
- delta works, ☺☺☺☺s, polders
- stock exchange and multinational company
- microscope and telescope
- pendulum clock
- electrocardiograph
- compact disc
- sawmill
- speed camera (sorry for that

)
- submarine
- artificial kidney
besides that the dutch discovered:
- bacteria
- spermatozoa
- infusoria
- australia
- photosynthesis
- rings of Saturn
military:
- thales goalkeeper, +1 defense against against incoming missiles and ballistic shells
plus!
- the dutch founded New Amsterdam, nowadays known as New York City
- the dutch stole the British flagship Royal Charles
- the dutch co-founded the EU
special resources: Cheese and tulips
