It will be really exciting if we confirm one, then.

The spiral structure here is a hypothesis within a hypothesis. Whatever objects comprise the Oort Cloud, they haven't been directly observed. Scientists have inferred its existence from a variety of comets that seem related and have very, very long orbital periods, such as 200 years, or 2,000 years. So these comets are observed once-in-a-lifetime, or once-in-a-civilization, and the hypotheses say that they're being dislodged somehow from a "cloud of planetesimals" where a bunch more of them are found.

But this supposed cloud would be extremely sparse: plenty of space in-between the very small icy bodies, and individually, they're so much smaller, and so distant from the Sun, that they don't reflect enough light to our telescopes. They really don't send signals in other wavelengths, either, like a pulsar or quasar or something with an active powerplant.

This is beyond the Kuiper Belt, even; the Kuiper Belt, if it indeed be a belt, has offered us a couple of directly-observed objects, including Pluto and Charon.

So it's nice to conjecture and invent proposals for some kind of structure there, but the very existence and extent of the Oort Cloud is something that's been extrapolated and inferred from secondary evidence.