There really needs to be a simple up/down program change function like what is used in the uHe synths like Diva, Hive, Zebra etc. It's so easy to use with a simple "press the up arrow to go back, press the down arrow to go forward."
Kontakt is so fiddly, you have to position the cursor over the small triangle .NKI change buttons. Really this shouldn't be that hard.
Just a suggestion (also maybe a function change the snapshot settings with say the left cursor and right cursor buttons.