Sistene is the Wonder everyone wants for a culture game (though I find it a bit cheesy that it's now at Music). Parthenon isn't highly valued by the new AI so it's nice to have (with Marble/IND). Oracle fits well with a religion-grab and I think the GPP can be steered away from Prophet points to Artists (but then I would say that seeing as it's the approach I employed ). It's an important consideration for sure, but the end-game will show whether it's a better approach than the financial steamtrains of Vikings and Holland. Inca have two strong culture game traits, so I think that will prove decisive in the end.