I tried ClassicPress when it first came out. Then bailed on it later. And am now using it again.
The reason I bailed on it for a while was exactly due to posts like this (and also that poll). I’m sure you’re familiar with the term FUD. That’s exactly what so many posts on this forum are, be it unintentionally.
I came back to ClassicPress because Wordpress, again, introduced annoying changes. So I guess that is what I hope ClassicPress to be first and foremost: a Wordpress 4.9 LTS release.
It’s a very good piece of software as it is. IMHO it does not need to ‘evolve’ into anything particular. It just needs to avoid becoming stale: refactor towards the latest PHP versions, apply security fixes.
If anything, I would like it to become even leaner. Modularize most of the functionality, so I can leave it out, or replace it with 3rd-party version. E.g. swap the default editor for a different one. Or just remove it completely if all my content is API submitted, etc.