It's like the Riot dev team has never actually played against Yasuo or Fiora.
In response to this posting from the Dev Blog: http://na.leagueoflegends.com/en/news/game-updates/gameplay/dev-blog-classes-subclasses
Skirmishers
Unlike Assassins, Skirmishers aim to shred through any nearby enemy that approaches. Because Skirmishers lack high-end burst damage or reliable ways of closing in on high-priority targets, they are instead armed with situationally powerful defensive tools to survive in the fray, along with extreme sustained damage to cut down even the most durable targets.
Really?