"cairo" as default in ggsave & RStudio Plots pane in Windows?

Is it about time ggsave (and Plots window in RStudio) used type = 'cairo' by default in Windows? Default plots have terrible aliasing

ggplot(iris, aes(x = Petal.Width, y = Sepal.Length)) + 
    geom_point() +
    stat_smooth(method = "lm", col = "red") + 
    labs(title = "Normal") +
    ggsave("normal.png") +
    labs(title = "Cairo") +
    ggsave("cairo.png", type = "cairo")

(Notice aliasing around points and line in normal plot)

It would also be great if RStudio rendered plots with cairo in the plots pane.

Thanks for the feature request! Would you mind filing this at https://github.com/rstudio/rstudio/issues, just so we don't lose track of it?