I am definitely biased once I realized the primary author of the language (Wren) is Bob Nystrom, someone with professional experience in both game and language development [2]
[1] http://wren.io/
I know patterns (especially "design patterns") have become a bit of a swear-word, something which hints at severe engineering malpractices, especially along the lines of introducing unnecessary complexity for seemingly its own sake. I think that view oversimplifies the topic greatly, so hopefully people don't dismiss it at face value.
[1] http://gameprogrammingpatterns.com/ [2] http://gameprogrammingpatterns.com/contents.html
It sounds like it may actually come in handy - I've ended up creating a number of solutions which came pretty close to being fully fledged domain specific languages. Sadly, despite nominally passing a CS compilers course about 20 years ago, my implementations have been horrifically incorrect. Maybe it's time to refresh my memory of how to actually do this.
I'd say it's worth the fun of writing your own alongside or after!
Not that Lua is ugly (subjective), I find it as something Javascript should have always been.