Bring Esperanto to Hungarian speakers next, here's some reasons why.
With Esperanto for Portuguese speakers almost done, I wanted to suggest that Esperanto for Hungarian speakers is completed next and I think there are a few decent reasons to justify this.
Firstly, I understand that Hungarians have to learn a foreign language in order to graduate at school and many pick Esperanto; according to Wikipedia this number has been growing over the last few decades. The first reason then, would be to aid those students who want to learn the language.
The next reason is that there appears to be many Hungarians using Duolingo. There are over 5.28 million Hungarians learning English via Duolingo but the country only has a population of about 10 million, so 50% of the population COULD be using Duolingo; that's a great opportunity for Esperanto right there.
Third reason. Esperanto, if brought to Hungarian speakers would be the second language they'd have access to on this website. Due to the small population, it looks as though people have only bothered to bring English to Hungarian speakers. With Esperanto already having its foot in the door in Hungary and the benefits Hungarians could get I think the course would do well there.
To conclude, the small size of the Hungarian will likely count against the course I'm suggesting, however, thanks to the popularity there I think it's definitely a better idea to further strengthen its position in the country. Unfortunately, I don't speak Hungarian so I'd be unable to contribute but I definitely like to see the course for the reasons above.
In Hungary there is a rule that in order to get your BSc degree, you should have a B2 exam in a foreign language. Most people take English, but Esperanto is also popular because it is easier to learn than English. But I think many people who have Esperanto exam, after the exam does not use Esperanto anymore...
Hungarian is a kind of isolated language in Europe, so it is harder for us to learn a second language (compared to Spanish people learning Portuguese, for example.)
So Esperanto for Hungarians is a good idea.
But, on the other side: currently, only English for Hungarian is available. If Duo ever decides to add a second language, there are better picks than Esperanto. I would like to see German or French for Hungarian speakers first. My reason to join Duolingo was to learn German. Here is a discussion about this: https://www.duolingo.com/comment/26478136
There are also famous people in Hungary who speaks Esperanto. For example, the businessman George Soros is a native speaker. Furthermore, László Polgár (born 11 May 1946 in Gyöngyös), a Hungarian chess teacher and educational psychologist, had three daughters, whom Polgár home-schooled, primarily in chess but also in Esperanto, German, Russian, English, and high-level math (source: Wikipedia)
In order for Esperanto to truly be an international language, it must be easily available to an international audience. I would have to agree with this post; it is the most logical option to bring Esperanto to a language like Hungarian, as there is the largest potential gain in speakers.
I've always heard that Esperanto is specially popular in Hungary, probably more than in any other country in the world, so it makes sense that there should be an Esperanto course for Hungarian speakers. By the way, Why is Esperanto so popular in Hungary compared to other European countries? And how many Esperanto speakers are there in Hungary (approximately)?
Are the stats for how many people take a Duolingo course accurate, though? I honestly doubt half the population of Hungary is learning English through Duolingo...
We don't know how many people registered on Duolingo, did one lesson then quit.
Also, someone learning Hungarian can take the "Eng for Hun" course as a reverse tree.
Last weak, I traveled on the train, I was sitting next to an elderly lady, and she showed me she learns English with the Duolingo app. :)