One thing that I'd love to see is more high quality forums as pluggable components instead of being / as well as being standalone apps. For Rails specifically,

One thing that I'd love to see is more high quality forums as pluggable components instead of being / as well as being standalone apps. For Rails specifically, we're using Forem over at Miniand which plugs in as a Rails engine and shares the same user accounts with the rest of the site via Devise. A lot of people who sign up to our forums end up converting into sales, and I believe that part of the reason is the seamless integration via the single account. Our wiki is also an engine, and also uses the same accounts, and having it all under one account system has been very much an eye opening experience. https://github.com/radar/forem https://github.com/radar/forem https://www.miniand.com/forums https://www.miniand.com/forums