I tried the static typing support in 3.x and it just wasn't nearly good enough. I really need being able to do shit like Array<Dictionary<Thing, OtherThing>>. And I want the static typing enforced automatically onto me, with compilation errors when I screw it up, not something I have to remember to label. Even with C#, there are still blank spots for this unfortunately, where the Godot standard library just passes you an untyped Array.

I know 4.0 has improvements here for GDScript, which is good to hear, but I'm quite comfortable in C#, coming from a background as a Java/Android dev.