一楼的信息其实过时了23333

我捷克语属于半弃坑状态了，现在我完全拥抱罗曼语族、北欧语言、凯尔特语族和克里奥尔语了

Re: 如果你被授权决定Duolingo未来要增加的语言课程，你会选择哪些，为什么？

还是转自Duome，我是那里常客，然而那边还在活跃的拆腻子，目前只有我一个人...

Re: If you were given the power to determine future languages on Duo, what would you choose - and why?

I think the language is like a complex form of art. it's made from grammar, lexicon, pronunciation, inherence (sth. like cultural background, native users, etc.) and every element is indispensable.
well, another good question. the following courses should be in English.
1- Kriolu (aka Cape Verdean Creole). we only have Haitian Creole here, and it's French based. why not add a Portuguese based one? creole and pidgin languages have their own unique charms, culturally and linguistically and that's the point linguistic researchers all know.
2- Papiamento (aka Papiamentu). if Duo don't add Kriolu, this would be another great choice. there are only few languages like this which are based on multiple languages from two language branches.
3- Catalan. Duo has Spanish→Catalan, but there are still non-Spanish speakers who wanna learn. Add Valencian too if possible! that would be a good chance to compare the two languages.
4- Ainu. I've read several books about Ainu languages in Japanese. the addition of this course would be meaningful to let people know more about language isolates. there are a few textbooks only in Japanese, so this must be helpful if the course is in English.
5- Basque. another example of language isolates. if Duo don't add Ainu course, please add Basque course at least.
6- Zhuang or Bouyei. tonal language learning is tricky. for Tai-Kaidai language family, it's more complicated comparing with the course Duo already have——Vietnamese. and learning another script system isn't that friendly for beginners, so Zhuang and Bouyei are good choices comparing with Thai or Lao if talking about popularity. also, they have fewer than 9 tones, and many of their words are borrowed from Chinese.
7- Filipino. you can't deny Philippine culture's influence, and there are many Asian people who are learning Filipino, especially Indonesians and Malays. that's a huge population.
8- Toki Pona. need I tell the reason? you all know it. ;)
9- Marshallese. this is a typical Micronesian language, and it's the official language of Marshall Islands. that would be a good comparison with Hawaiian, a Polynesian language in the same family of Austronesian languages.
10- Farsi, Pashto or Dari. there are plenty of people who are interested in Persian and Afghan culture. there are also many people, who are or aren't Arabic speakers, who have curiosity about the country Afghanistan. the three languages have many things in common.

Icelandic, Faroese, Estonian, Latvian courses would be my personal addition without other reasons.