'Not useless' is not a high enough bar in software. Flexibility always adds complexity, and complexity is a cost. Sometimes that cost is worth it, but the benefit needs to be much larger and clearer than 'not useless'.
Not a high enough bar for what exactly? So far this entire thread is a lot of vague talk spawning off the idea that it doesn't solve a problem. That's the statement I don't agree with. If enough people decided to use it, that's the only bar that actually matters. But it clearly solves a problem, just not necessarily a problem every Emacs user has.
