I think half the problem there is everyone offering half a house for free, but every company is offering a different half. No one wants to pay for the paid offerings that have all the features, they install one SEO plugin to get page metadata, another to get structured data / microdata, another to optimize keywords; when all they had to do was buy the premium version of Yoost, for example.

Thankfully there was a recent consolidation in a plugin called Admin & Site Enhancements (ASE). Probably got rid of 10 others with this thing. Includes duplicate post/page, admin menu cleanups & reorganization, hiding dashboard widgets, cleaning up the top bar, changing the login URL, an easy way to setup SMTP delivery, media replacement, hides the annoying admin notices, and a bunch more.