Yes, Maps looks like a disaster, at least in the short term. Not only that, but it's so US-centric that it cuts off postal codes after 5 digits.
People are saying it will get better, that having a massive population use it will swiftly improve the data, that Apple is going to release APIs to make it a platform for other developers who will create integrated public transit apps, and so on. I say... good for them if they can pull that off sometime in the next year, though I don't see how crowdsourcing is going to help with terrible satellite imagery. Meanwhile, the user suffers.
I hope Google releases its Maps app soon.