Yep, sure will. I tried a bunch of dependent objects accepting nested params and it was sadness. The form would have to submit (with even more structure than this)

```
organization:
  memberships: {
    0: user: {
      ...
    }
  }
}
```

Then everything has to be messaged correctly and show up in the form errors, so it just go super gross. Bugs around it should be easy enough to regression test, and neither of these methods have very many things that could go wrong.