If you know how to code it's very easy to learn, it doesn't matter if you come from C#, C++, JavaScript, Python or something else.
There's almost no nasty surprises. Nothing like learning JavaScript and then discovering the weird behaviour of this, or using Python and discovering for the first time that the weird bug you had was because you set a dictionary as a default value for an argument.
It's got some of the syntax sugar you might expect from modern languages. Not as much as Python, but that might be for the best if they're trying to keep things simple.
Some of the syntax sugar (@onready, $, %) is specifically there to integrate with the engine and it is very very nice.
Documentation is good, integrated with the editor and the inspector.
The debugger works well (98% of the time, hopefully it'll keep improving).
It's one of the nicest languages I've learned in a long while. I think it's because it's only trying to do one job and it does it fairly well.
When I started learning it I noticed many things that were done better in other languages I've used (it's specially tempting to make comparisons with Python since it looks similar). After a few months using it almost daily to make a somewhat simple game I realised most of those things don't matter and for the purpose of making games in the engine it's pretty solid.
I can’t speak for the parent, but @onready combined with the $ operator is a delight when making a prefab.
I also very much like the way signals are declared compared to C#’s code generation.
I’m also a fan of TypeScript, so being able to do gradual typing while prototyping is a huge plus. It’s going to be a big advantage if they ever get JIT.
Everything being reference-counted, rather than fretting about GC pauses is comforting too.
Also not the parent, but: It's a very simple language. It looks like Python and behaves like TypeScript. It makes it easy for beginners to get into game development without having the visual overhead of a C++ or C#.
