There is a real tension between the leverage of a niche language and the FOMO of it not adding anything to your resume.

I love Haxe for its power and the number of targets it can deploy to, but it doesn't do anything for my career unless I want to work as a game dev (which I don't).

So, I'm leaning more into Python with mpypy (and mypyc for iOS) and trying to focus more on the problem domain rather than the programming language.