If we bring back Matthews (or sign someone like Butler) and get Aldridge to come back and sign someone like Jordan, or maybe keep RoLo/Plumlee rotation and add some awesome bench guys, we'll be in a very good spot. It's not realistic to have an all-star at 1 through 5, so having 3 great players in Lillard and Butler/Jordan (preferably Butler) and Aldridge and two complementary players like Henderson/Matthews (both great glue guys) and Rolo/Plumlee is a very good equation to have. Allows Lillard/Aldridge/Butler to get enough shots, and they fit really well together. Don't need 5 guys in the starting lineup for 15+ each.
That's nowhere near the value for Cousins. Even if they're Karl players (who may be fired soon), it's basically a solid bench player (Leonard) who could be a decent starter, a project who is 100% potential (remind you of a Frenchman we had for a while?), and a scorer who's shown flashes of brilliance but also has had a number of duds. They'd need to get at least 1 good starter, probably a good 1st round pick, and either unload a bad contract or receive a solid player or two (a Leonard or McCollum).