- It'd be great if the rhymes panel was larger (or resizable). I use RhymersBlock on iOS which has a kinda neat way of color-coding rhymes within your lyric.
- Something I desperately need that no app has implemented is a way to build lyric "alternatives" on a phrase by phrase or line by line basis so that I can swap in an alternate lyrical treatment and see it in context. (Revision history would be a related and also probably very cool feature)
- I personally don't think I'd have much use for chord progression suggestions, but that's just me.
- I can't currently move a chord annotation while that annotation is selected. Have to click off of it to deselect before dragging works again.
- For chord annotations, it's often useful to be able to "split" the chord into the chord + bass (or root?) note especially for passing changes. You see this all the time in Beach Boys songs.
- Apple's Music Memos app has a bunch of audio analysis capabilities that I realize I use a bunch. They extract chords (which I don't use very often) but more importantly, they auto-detect a BPM from a recording which I use as the starting point when I'm ready to move from demo -> production.
I'm really excited about this app. Here's hoping it turns into the "Songwriter's notepad" I've always dreamed of!