Wikiwand[1] is something I've been using for a while that makes Wikipedia a bit nicer to look at. The concerns others have voiced about the long line length are addressed by this plugin. It also has a great table of contents on the left. Other things, I think wikipedia.org does better. Excited to see the changes!
Thank you. I've never seen wikiwand before but it is a big improvement. It is missing those pop over windows that wikipedia has when you hover over a link though.
[1] https://www.wikiwand.com/