I recently started practicing NG+(PS4) and discovered something interesting about Eight. He has an ability called Last Stand that gives him the Aura, Haste and Killsight effects, which means you can have Haste in almost every mission except Liberation and Pandæmonium. To nullify the effect of Killsight, just use some Protect equipment, such as the sp crystal or the agito insignia, and I also recommend using the i'cie mode on Eight, so that the effect of Last Stand be permanent. I would be happy if someone ran using this strategy, at the moment I'm busy focusing on the NG category.