[cbk1994]

GS2 is a pretty awesome language; it's very easy to learn (compared to other languages), and you can do a lot of stuff much easier than with other languages. While the price may be speed of running the code, it's still a very good starting language, and I think it is fine for Graal. I don't see any need to change it to a completely different language, just listen to some of the suggestions (**custom objects**, catchevent, etc).