I think Writer's Guild should be built somewhere. The Artist GPs don't share the same GP point pool from the others, so we don't lose much. And generating some boost in culture always help.
I've read strategy guides that saving GArtists to be used after the World Fair thing is better, because you generate more culture at that time. But I'm not sure those guides aren't valueing the straight up culture value more than it should be, compared to the snowball effect of earlier SPs (that you get from using artists earlier).
So, I think we should build it, but not in the Capital, and not sure if we need it right now. I'd say Devotion is probably the best city to build it, considering it's running out of things to build.
I've read strategy guides that saving GArtists to be used after the World Fair thing is better, because you generate more culture at that time. But I'm not sure those guides aren't valueing the straight up culture value more than it should be, compared to the snowball effect of earlier SPs (that you get from using artists earlier).
So, I think we should build it, but not in the Capital, and not sure if we need it right now. I'd say Devotion is probably the best city to build it, considering it's running out of things to build.