1) It would be nice if the single digit hex values in the log window were padded with a leading '0'. This would make strings align and easier to bould check controls were setup properly.
2) It would be nice if there was a debug bar, like a status bar pinned at the bottom of the page, which would show the last line of the log window, e.g. last midi message sent. it would mean the log window wouldn't have to be taking up all that real estate as you test every control in a layout to see it's sending the correct values.