I personally found one of the other options no problem, in fact most of them were no issues for me. It's just the "sans-serif" isn't a sans-serif (aka no decorative "tails" at the stroke ends) per se so it would feel quite misleading, and thus perhaps next time you can amend on it in future updates :v
I hope I am not coming across as too condenscending. I just think readability needs to be taken into account while picking fonts for paragraphs of texts.
That said, I will wait for future content updates! Can't wait to see more of this.