The good-parity Arthur-type conjecture for classical groups

Let $G$ be a classical group, and let $\Pi_{gp}(G)$ be the set of good-parity representations. Write $\Pi_{A,\,gp}(G)$ for the good-parity Arthur representations, $\Pi_{\overline{A},\,gp}(G)$ for the good-parity part of the Arthur closure, and $\Pi_{u,\,gp}(G)$ for the good-parity unitary representations.

Good-parity Arthur-type conjecture. For a classical group $G$,

$$\Pi_{A,\,gp}(G)=\Pi_{\overline{A},\,gp}(G)=\Pi_{u,\,gp}(G).$$

Equivalently, for every $\pi\in\Pi_{gp}(G)$, $\pi$ is of Arthur type if and only if it is unitary. This is proposed as a representation-theoretic description of Arthur representations; its general validity is not established in the supplied text.