NHK Easy News posts news articles daily in intermediate Japanese with furigana and definitions and a dictation. There are plenty of apps in the play store that scrape this and package this into an app already, but I would love for it to be integrated into Renshuu.
I just noticed the may update and the text analyzer. I copied some text from easy news and this is just what I was after! The only improvement I can think of would be to pre-download the articles and analyze them so they are available immediately right from Renshuu with no need to copy and paste.