What Are the Current Limitations of Dynamic Land?

The goal of dynamic land is to be a computer in the full sense of the word. It's not just an educational system or a kind of toy, it's supposed to be the actual system that you're working inside. What are the current limitations of dynamic land at the moment? I mean, i think it depends on your priorities and who you ask. There re a lot of technical constraints, so there is a lot of engineering to do in terms of making more of it.