independent scale and offset for channels in multi-channel plots
It would be nice to be able to define 2+ different Y-axes on the same plot.
Even fancier: Some way to make the Y-axes the same size (eg. +-1 unit), but centered around a different value. Here I'm thinking about something like OSEM witness channels, where I want all the Y-axes to be the same number of urads, but each optic has a different mean value.