It might seem odd to some, but one of the most important features that I'm waiting to see confirmed is whether it will be possible to adjust screen brightness from a MBP. (One reviewer who received an early demo model said it was not possible, but I'm hopeful that perhaps a software update can enable this capability.) I use that feature with my LG 5k several times per day and I can't imagine needing to go back to fussing with an external remote or fiddly monitor buttons to adjust screen brightness.