I agree. There is nothing wrong with the current linear graphs, they do the job but are somehow outdated. I think that using a more informative graphs may be welcomed too. Bubble charts are used in different ways but you could use a single graph divided in 4 squares to illustrate your gains or losses in Kg/lbs (x-axis), % (y-axis) and the size of the bubble represents the time you spend in each excessive, and a bubble per exercise.

I agree. In addition to current UNITS selection in settings, to have the ability to change de UNITS (kg/lbs) per equipment could be welcomed by many users like me. My gym (American Barbell) has a broad variety of weights equipment but the diversity of units between them is also huge. If we could select what unit we want to use per specific equipment/exercise could be beneficial to avoid the back and forth either using a calculator or changing app’s settings.