What do you wish Lovable, Bolt, v0 or Base44 could do better?

I'm asking because I honestly don't know if this is just my perspective as a software engineer.

I've tried several AI app builders, and while they've improved a lot, I still find myself hitting the same walls. They often feel rigid, expensive as projects grow, and I rarely feel confident I could build and maintain a production-grade application with them alone.

But maybe that's because I'm approaching them with a developer's mindset. Perhaps non-technical founders have a completely different experience and are shipping successful products without worrying about the things I worry about.

So I'm curious. If you've actually built something with Lovable, Bolt, Base44, v0, or similar tools, what do you think they're still missing? Or do you feel they're already "good enough" for most real-world apps?