So, the big advantage of GOOL was being able to evaluate an redefine functions in the image in the running game. It's unclear on a short read of the documentation if this is a goal of GameLisp
https://github.com/fleabitdev/glsp/issues/10
Thanks to the last 25 years of improvements in CPU tech, it's less "patching raw binary artifacts into the running program" and more "recompiling the entire source tree in a couple of hundred milliseconds" :)