I'm used to seeing the level at which a sound peaks on its mixer channel - eg Kick hits at -4.8db (value seen on channel) or Kick is peaking over by +1.6 etc
I'm surprised that Studio One doesn't do this, there's the space to put a reading so it's clearly a design choice. First DAW mixer I've ever used that doesn't have this (Cubase, Ableton and even Maschine all do).
Please add this minor but useful change to a future update.