I don't think Standard Step is going away. Always getting Esprit from your regular attacks just means a base damage increase. It also might only be granted from flourish moves. The blue attack that is triggered after Technical Step was a min long buff but Technical is 2 min unless they lower that to 1 min I don't see that blue buff replacing standard step. The action that triggers after Saber Dance is probably another AoE attack. Just a line AoE instead of a circle one. Odds are the move that triggers from Improvisation is a heal of some kind since it didn't look like Improve grants Esprit anymore.