Could be good if basic features like icons weren't locked behind a paid subscription. Update: your calling THEMES an advanced feature because you want to not because it is one.... Sorry but changing the background color to black, which it should be in the first place isn't an advanced feature, it's about one line of code. I'm a software engineer myself and know the difference between the two. Same goes for icons which are essentially to app functionality. Check out Notion for a great example.