Please add a scale to the meters, particularly the level meters and the ones with frequency readout (spectrum & spectrogram). I know it gives a reading for peak frequency and peak level on the LU meter, but these aren't enough to be really useful on their own. I think you can add the option to turn on a scale for each meter without affecting the space.
It would also be great to have some other options in the level meters, not just Peak/LUFS. But RMS, VU, & K-meter etc as options, or additional traces that can be enabled.
Also an analogue style VU meter with needles would be a great addition!
Keep up the good work