Dallas ends up with not much of anything out of the Luka trade now, but yeah, they do get some cap space to play with next season.
Wiz could have a stellar defensive front court next year Sarr, Davis, Coulibaly to go along with an awful defensive back court led by Young. This probably at least gets them into the playoffs if everyone is healthy. And they still have a top-5 pick, plus they still have a bunch of draft swaps.