I actually can see the OP's point about the Unique Improvement... as MadDjinn or one of the other well-known guys on here commented on one of my threads once, it's always better to have an earlier bonus that's smaller than a later bonus that's bigger. After all, a little boost early on -- say, getting one extra measly little hammer per Horse tile -- can mean a huge difference after 300 turns. That's Russia in a nut-shell. So, not getting to use the Unique Improvement until fairly late could be considered a minor handicap, I guess.
That said, mabalogna perfectly laid out how to use the UA in the list he made above.
All-in-all, Netherlands isn't perfect, but I see myself getting around to playing them and probably being able to win at Standard, King, and probably Emperor, which are the difficulties I've played most any other civ at across all the games I played in vanilla. They may not be quite so powerful as Persia, Russia, or Inca, but if it's a sea-based map, I'd rather play Netherlands than those guys I'd assume. After all, would you really play Netherlands on a land map all that much when their UU is a naval unit?
That said, mabalogna perfectly laid out how to use the UA in the list he made above.
All-in-all, Netherlands isn't perfect, but I see myself getting around to playing them and probably being able to win at Standard, King, and probably Emperor, which are the difficulties I've played most any other civ at across all the games I played in vanilla. They may not be quite so powerful as Persia, Russia, or Inca, but if it's a sea-based map, I'd rather play Netherlands than those guys I'd assume. After all, would you really play Netherlands on a land map all that much when their UU is a naval unit?