Morocco UA... just to make certain I have this correct

Morocco's +gold is an early game advantage.

It makes a huge difference in early ages and then becomes less and less significant.

Early game advantages snowballs down the hill creating an avalanche effect that makes your civ a lot stronger.

One of the best thing to do in the early game is steal workers because it makes a HUGE difference longterm to get the worker sooner, rather than later.

Morocco's UA is really, really good in my opinion, not even for the bonus gold - but for the culture. I've been finding it somewhat harder to get massive culture output in BNW compared to G&K for games when I don't focus on Culture victories, and those few extra early points of culture really help out. That culture gives you the Liberty GE to build that necessary wonder, or get Piety's Reformation Belief policy in a useful amount of time. And of course you won't have to worry about gold at all, unlike nearly everybody else.