You can stop digging on the bottom of barrel for ideas for Venice. Founding a city on a coast tile for a UA is worthless. You would just be setting yourself up where 5 melee naval units can all attack at once, and most of your tiles would be 1 food till you built a lighthouse. It would be worthless just like how the Indonesia UA is worthless.
well that's just silly, starting an argument on Indonesia.
Although I agree, it'd have to be more than just settling on coast tiles, that's not really much of a good thing by itself.