I've been running my rMBP at the native 2880x1800 resolution and am generally happy. All the applications I use have options to adjust the zoom satisfactorily. But it is annoying that the general UI elements are so small. It seems like the image assets are there to for the 1920x1200 HiDPI mode. Looking at screenshots, its clear that pixel per pixel the 2880x1880 elements are smaller. Is it at all possible to consider running in the native resolution but use the UI elements from the scaled 1920x1200 mode?