* Smooth and fast.
* 160MB disk space, and 100MB RAM on startup isn't lightweight in my book, though.
* The plugin selection window is unwieldy. I tested it on an (audio-wise) clean macOS system, and the list of Apple plugins was already almost impossible to navigate. On my personal laptop, I've got hundreds of plugins more. A search/filter function would be most welcome.
* I wouldn't call it an audio editor, as I don't seem to be able to edit the actual wave. Or are you still planning to add that? I don't have a good alternative description handy, though. DAW, perhaps?
* Vertical zoom would be nice too.
* There seems to be always one tracked armed. That's going to cause accidental overwrites, which won't be noticed until it's too late. I see it's easy to remove recordings, but people in a hurry won't notice until after bouncing.
* Joining/grouping clips is needed.
Excellent work.