I have deployed app written in meteor serving an API, and while it's a solid framework already, it still has some issues. Form handling is a bit of a hassle, compared to the rest, because it's still all done manually, and deployment on a custom server, while relatively straightforward, is a bit of a pain, because you end up having to manually reinstall some npm packages every time you update code. None of that are fundamental issues with the design of the framework, though. There's some quirks that aren't yet worked out, because it's a young tool, but it's already extremely powerful.
I have deployed app written in meteor serving an API, and while it's a solid framework already, it still has some issues. Form handling is a bit of a hassle, compared to the rest, because it's still all done manually, and deployment on a custom server, while relatively straightforward, is a bit of a pain, because you end up having to manually reinstall some npm packages every time you update code. None of that are fundamental issues with the design of the framework, though. There's some quirks that aren't yet worked out, because it's a young tool, but it's already extremely powerful.