It's been asked for before by many users. Please update the Javascript engine.
We are actually trying to give as many options for scripting as possible - Python is nice and modern scripting language but JavaScript is very widely used.
Also, I would like to note that the upcoming release will be actually 12.0 (not 11.4). This is mostly due to the fact that there are many new features in this release and we have updated project files format for friendly source countrol integration.
Thank you,
Masha