I personally would rather the team prioritize adding new languages, like Chinese (Mandarin), Hindi, Japanese, or Portuguese, than I would see them add new features. I think the core functionality of Lingvist is outstanding and my main complaint is that there are very few languages able to be learned.
Some of these recommendations are good, though and seem like they would be easy to implement. I like the idea of a "dark mode" and that seems like it would be easy to implement.
I personally find nearly all the vocabulary useful, and I wouldn't want to skip any of it. The vocabulary is included in order of frequency of use, and I have noticed that I hear virtually all the vocabulary if I immerse myself in the culture enough. I don't feel like I've learned any "wasted" esoteric words. Some words that I initially thought were esoteric, occur in frequently used idioms.
The problem is that I can't see my progress in Russian. When I go in progress > vocabulary, I can't see the pareto diagram with the percentage of text that I can understand. It displays "Your vocabulary is being calculated"
Actually I already learned 525 words in Russian and 1300+ in Spanish so I don't want to reset anymore. Can you fix the vocabulary problem?