Here's another side note: I've been having second thoughts on the relevancy of Painter's Studio/Photographer's Studio.
They feel like clutter at the moment, as their only major purpose is the Artist specialist slot. There is already enough gold and culture floating around by this point in the game. What could happen is moving the Artist specialist slot to the Art Gallery, deleting the Gallery's building requirement, and increasing its culture from +10% to +15%.
The main argument against this is that the relevant technologies of Perspective and Photography wouldn't be doing so well without these buildings. Both techs would still be viable in terms of meeting the two-trick threshold, but 3+ tricks is better, and I especially like to have one, or better two, non-unique tricks per tech. Perspective's other tricks are unique, being Leonardo's Workshop and Sistine Chapel, and Photography has the Agent and the free Great Artist, so one unique trick there. Another argument is that I think these buildings have to go together because they are a line, and the Renaissance Era is hurting for buildings while the Industrial has more than enough, and I don't want to lower the number of buildings in the Renaissance at all.
So I probably won't delete them, but it wouldn't be a big loss if they were removed.