There's one small pain point that seems like it would be a fairly easy fix. Changing speaker names involves so many unnecessary clicks.

First, what are those two radio buttons to the left doing? They are totally useless as far as I can tell.

You have to click on the pencil to change the speaker name, but once you do, the name isn't pre-highlighted, so you now need to double click on the name to select it.

What would be much easier is lose the radio buttons, lose the pencil, just let us click on the name and edit the text. Or maybe click on the name and press return in order to edit the text, as if you were changing the name of a clip or sequence in the project panel.