This extension is the one of the main reasons I continue to use Firefox instead of Chrome as my primary browser. However, I don't like the new looks for Firefox 57. I don't want to see the "Tree Style Tab" block at the top of my list of tabs, I only want to see my tabs. I also want to get rid of the new-tabs button at the bottom of my list of tabs. I also don't want to see tabs horizontally across the top bar of firefox when TST is open. I still love the extension, and it feels a lot less buggy than it did before 57, but I want the appearance to be decluttered and get out of my way more like it did before.