Hope I'm not hopping into this thread too late, but I just had time to finish up my game as the Netherlands.
Settings: Deity, Online Speed, Fractal
Not the best start, but easy to defend and has some nice campus spots.
I guess I'll take a +6 Campus...
Easily grabbing some gold by liberating a cs from Germany.
Frederick wasn't too happy with me after that, and decided to attack me in the Medieval era. It didn't work out so well for him. But it did take me a while to completely wipe him out.
Nothing exciting really happened after that, so here's all my Space Race great people.
The Khmer make a sad attempt to stop me.
Their ally Brazil makes a slightly less pathetic attack.
The Khmer were closest to me in the Space Race, but still quite a long way off.
Lift-off!
Overall it was a pretty easy game despite an average start location. I was able to make some early gold by completing a cs emergency against Germany, which helped me buy out some useful early buildings. Unfortunately I didn't have any iron so I had to wait until muskets to take out the Germans. But after that it was smooth sailing all the way to space.
I wasn't really pushing for speed, and could have certainly min-maxed a bit more to speed up my victory. But sub-160 on Online speed is going to give you the win 100% of the time in my experience. I actually went a little too hard on culture and had tons of excess Great Writers running around my empire by the industrial era.
I think the Netherlands are a slightly above average civ with well-rounded abilities. They obviously depend a lot on rivers to take advantage of their strongest bonus, but I've never rolled a non-river start with them so that's rarely a problem. Having a few +5 or +6 campuses early this game really helped me catch up in science and be able to fend off Germany's knight/warrior monk push. Those adjacencies also come in handy for using Rationalism, as others have noted. It's nice that the Netherlands are one of the easiest civs to get high Theater Square adjacency bonuses with too.
I feel all their other abilities are middling or situational at best. The culture from trade routes is OK early. Their UU is useful, but not game-changing. Polders are great if you get a nice map for them, but despite tons of coastline I only had a few spots to build 2 adjacent Polders in this game. In any case, I like civs with flexibility and playing the adjacency bonus mini-game so the Dutch suit my play style just fine.