Ecchi has never had a big presence in the wide niche genre Yuri, or Shoujo Ai as it’s more accurately called. Yuri has always been a genre that I’ve always leaned toward the “erotic” side than the actual “romance” one, only because most anime tend to be too sugarcoated with soap opera quality stories. That doesn’t mean that there can’t be any good ones. I think yuri fans deserve better than Valkyrie Drive Mermaid if they want their “dumb ecchi anime.”