I get that you made it to scratch an itch you had and solve a problem you had with other languages and that's cool, but as an external person looking in, who doesn't have that exact itch, its not for me, despite the rest of the language really looking quite awesome, because for the kind of code I'm writing, this seems like it will cause a lot more frustrating bugs than convenience.
I don't deal with a lot of ad-hoc data, but even when I do, that data usually needs strict validation, as it tends to not be very clean. Having things silently convert hides this and while it may make the code simpler, that code should have validation anyway, so it really won't be any more work in the long run (for me). Slight errors in data cause billion dollar bugs, after all. Maybe not in NLP though, so, again, we have different use cases.
But that's just me and obviously my priorities differ from yours. In any case, congratulations on building this, that's quite an achievement.