Maybe they just mean a UI that replaces Fishing Boats, which I think might be doable. Possibly. Iunno, I haven't done much research into that sort of things. But yeah, bang on about the other stuff, though, it's too bloody weak by half. How about this?
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The Basques (Jose Antonio Aguirre)
Start Bias: Coastal
UA:
Zazpiak Bat
Every Social Policy Tree Finisher decreases the
Culture cost of Social Policies by 25%. +2
Culture and +10%
Tourism in the
Capital for each Policy in Exploration.
UU:
Bando (replaces Pikeman)
Generates a flat boost of
Culture every time the unit heals back to full HP from below 33% HP. Starts with Amphibious and Charge. Upgrades to Musketman.
UB:
Sagardotegi (replaces Windmill)
1 Engineer Slot. +20%
Building Production bonus. +2
Culture if a Military Land Unit is garrisoned in the City in which it is built, rising by +1 for each Promotion the unit has. Has no terrain requirements.
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I tried to capture what you were going for with this, but I'm... not sure how successful I was. Anyway, the bandos (as I'm sure Leon is aware) were groups of hangers-on and general levy-pikemen that spent a lot of time beating the tar out of each other in a series of increasingly bloody conflicts between noble families of the Basque region, collated under the umbrella term "The War of the Bands". Insert terrible music-related joke here.
The rest, well, I tried to give it a more Culture/Warfare bias a la Monty, who is my bestest fwend, but in keeping with the whole "additional resistance to Ideology Pressure" deal... which is basically what Tourism is. I limited it to Exploration because a) the bonuses are too good, b) the policies in Exploration really aren't that bad, and c) if you're a Culture/Warfare Civ, you know you want them Antiquity Sites, especially the hidden ones. That's sort of why the UB does what it does as well - soldiers, after all, drink like fish in my admittedly limited experience.
Alright, it mostly comes from Sharpe novels, but what's a girl to do? =]