What makes Patternfly stand out for me is that incorporates opinions from enterprise dashboards/line of business apps. If it stays true to this and solves all of it's project management and code quality issues it could leap ahead of most other frameworks. I need whiz bang examples of composed components almost more than I need the component library itself.
As a back end developer here is the work flow that is eased by a library like Patternfly:
1) Someone develops or exposes an API. 2) A team wants to dog food a potential new solution built on top of that API and shop it around. 3) Someone gifts them a single developer and a bucket of hours to see what they can do.
In this instance I need a stable library that looks good and doesn't require me to wade through the front end too much. Patternfly fit that niche for awhile. However do to the slow dev cycles I've moved to Semantic UI and I'm just building my own component library out of that. Arguably the route I should have taken from the start but Patternfly let me ship stuff I wouldn't have otherwise in the time I was allowed.
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