With the (now not so recent) news of Batman: The Brave and the Bold in the DCU featuring Damian Wayne...I still think it's too early to realistically even fancast him. Damian is like, 8-10 years old by the time Bruce even learns he exists, so the right actor probably hasn't aged into the role yet
I also know it's a longshot to get the entirely 100% accurate Damian casting of half-white, quarter Arab, quarter Chinese, but I really hope they don't cast just anybody and call it a day. Like...his mom, Talia, is quite literally half Arab, half Chinese, there's no way Damian would be that white
That said, Grant Morrison's run was absolutely phenomenal so it's a great point to be taking inspiration from!