As a long time Adobe Fireworks user I can only agree with this article. Fireworks was ahead of its time.
I am really looking forward to Figma. Sketch is great and all but the fact that it is not available on Windows is a big issue for us as we only offer design services and most of our clients developers only work on Windows.
I had the same feeling about InVision. I really feel they are cooking something. My bet is that it will be a cloud based solution like Figma. They already have a lot of expertise in that area so it makes sense