Black-eyed Susans, I thought we had an understanding

Like Captain America, I don't want to kill anybody. I just don't like bullies. And it turns out that black-eyed Susans are the biggest bully on the block. You may recall that this spring, I cleaned out The Big Bed in front and all was tidy and nice.

Three months later, it looked like this.
 

Are you kidding, black-eyed Susans?



And so last week, I was back on a killing rampage, two hours a day for three days after work, just me and Weedy. Behold the carnage. 

  

I filled four giant garden bags full of black-eyed Susans, and still left two little patches alive. Whether that is a dreadful mistake, only time will tell. Meantime, I'm looking for some perennials to fill in the new gaps (and hopefully help prevent another black-eyed Susan takeover in the future. Any suggestions?