Can I ask you to expand on why you think the plotting facilities of Julia are difficult to use?
There are existing interfaces to matplotlib (PyPlot), the GR framework, PlotlyJS, Bokeh, PGFPlots, Vega, ECharts and others, along with the Plots metalibrary which offers a Julian interface to many of these based on types and dispatch, as well as Gadfly, a pure-julia library using the Grammar of Graphics. I personally much prefer the plotting abilities of Julia to say, e.g. R.
Can you say something about how this package improves on this situation?