Blaze could probably become a templating language with complex data-binding system looking forward to apollo integration and redux philosophy. Blaze was great at ease of prototyping and I think with new data sync paradigm, introduced with apollo, we could extend that further. Many of us however bound to things blaze currently lacking - libraries, processing reactive animations/styling(at least with little to no overhead).
Many of us(developers) are getting tired with bounds react places us in.
At the first glance 'the holy react knight's code', involving best practices makes it look mature and professional, but involves too much overhead when you develop a project with a small team. You just don't need all this 6-row components. You don't need all this prop-types checks. Don't need all these Presentational components and Container components. And actually you may ignore any of those 'best-practices'. But why?
Things like typescript, redux and apollo itself show us, that people don't want to think of anything they don't work with. I feel, UI that is closely bound with data(and aware of its state) and doesn't give you a ton of decisions you wouldn't want to make, would be the next UI framework.