I would like to see more stuff on the boxplot: Maximum, 99th percentile, 95th, 85th, and the same on the other side. Is it possible?
I realize it's possible to do this oneself, by calculating those percentiles etc., and then plotting them in one dimension. But the boxplot function is convenient, it handles the axes for you, it can already calculate arbitrary percentiles (using the optional whis
argument), and it lets you plot a bunch of variables in parallel (as at the bottom of this example file) -- which is handy, for instance, when using time-series data.