We promised to introduce a large number of new skills once we receive 100 positive comments before, and even though the playerbase seemed to have dwindled down, we haven't forgotten our promise. We're currently coming up with new ideas so that the game won't become more difficult or less new-player-friendly after we add more skills. We hope that this update will fulfill the needs of both old and new players. We're planning to launch the update during January 2020.
Also, just a reminder. The next update will be after we reach 150 positive reviews. We will make change some skills (such as the Focus skills) into passive ones into active ones.