I'm using Avidemux 2.8—I think it's the latest version, although I haven't found the right section.
My complaint is that, for many years now, numerous filters have disappeared. I'm referring in particular to "reverse" and "add logo" for only a portion of a video, but I think there are many others.
It's time to bring these filters back. Sure, you can do everything with FFmpeg, but a graphical interface is easier than the complicated syntax.