The Wordpress ecosystem is where it's at. People making plugins, themes, blog posts, education, etc, etc, etc. The Ghost ecosystem feels anemic at best. Go look at the templates. The list barely changes from month to month, and a significant number of themes are released then completely abandoned by the developers. I don't know why, but it feels like Ghost has not been able to get the community activated in an effective manner.

All of it is true. But installation wise, WP is way easier than ghost, especially for non programmers.

No oauth or ldap integration. And they don't want to do it either.

Right now I'm sure there's other things that take higher priority they need to get out the door. LDAP in particular would be much later in their product development cycle.

I wish they had a good system for setting up and managing user roles.

"I just wish they had a good <insert requirement here>" beautifully sums up why it's hard to get any alternative up to credible momentum / activation energy.

A lot of alternatives do individual X, Y, or Z functions better than WP. None I've seen have achieved a reasonable fraction (say, >40-70%) of the extremely broad set of aggregate requirements the entire developer, designer, and user communities would need to commit to a WP replacement.

Having a good plugin and theme system with an intiuitive web UI would make the rest of it easier. Bonus points for being able to add multiple repos.

Unfortunately, the can of worms that opens up in Wordpress is one of the worst things about it. Every plugin and theme is essentially its own ad-hoc web application running with global privileges.