We just recently migrated to Gainsight NXT from Gainsight classic. I have to say, the playbooks and success plan templates interface is a let down. The new look is extremely taxing on the eyes. It is much more difficult to interact with and I lose track of where I am on the screen when editing tasks. The hover highlight color is also very faint. I found it seems to change a little bit when I move between different monitors (on one screen it is grey, on the other it is off white).
NXT

Classic
