My cutscenes normally begin at the start of the map so I do have fadeout/fadein for it.. Theo othertime I use fades is when I need the party to show up in the scene, while the scene begins when you're already doing stuff on the map. I try to use movements when needed and balloons to somehow "show emotion". I also use battle animations on some "action" parts of the cutscenes. I dont use screen shake, never a fan of those. I also never had a scene which needed a flash yet..