Is a Europe ETF even worth it?

I watched the video from Finanzfluss on the topic of MSCI World + Emerging Markets + Europe and I'm wondering whether a separate Europe ETF really makes sense. Thomas from Finanzfluss builds his portfolio like this: MSCI World, Emerging Markets, STOXX Europe 600 Instead of simply taking a FTSE All-World. (also makes sense) I myself am already heavily invested in the FTSE All-World Index (see photo) and therefore don't want to switch to the classic 3-ETF setup or switch over unnecessarily. (Pay d