Been playing it since release and I have to say I quite like it. The mtx is less intrusive than Dragon Age Origins' DLC (no mention in game at all versus "There's a person bleeding out on the road, if you want to help him please go to the store page").
So far, the game is a buttery smooth 60 fps at 4k max graphics + FSR3 w/o ray tracing except for inside the capital city (running 7800x3d with a 7900xtx). The only graphics complaint I have is the FSR implementation is pretty bad, with small amounts of ghosting under certain lighting conditions. There's also a noticeable amount of input lag compared to the first game: not game breaking, but if you do a side-by-side comparison it's pretty obvious.
Sure the game has its issues, but right now this looks like something that I enjoy. Games don't need to be masterworks to be fun (my favorite games are some old niche JRPGs that have been absolutely demolished by reviewers at the time), and right now I think it's money well spent.
Not sure about GreaseMonkey, but V8 compiles JS to an IL.
Nodejs has an emit IL debugging feature to see the emitted IL code.