There are too many stuff waiting to get revealed, unlike August's Direct. Including Marvelous's full reveals, Namco's next remasters, Square's next slew of games (SaGa Frontier 2 actually leaked, should be there), Anno 1800, Beyond Good & Evil... All can fill a chunky 30 minutes of a Partner Direct. We need a summer lineup, there's not much there.
Plus August 2020 Direct was the Puyo puyo Tetris 2 one, not the WWE Battlegrounds one. WWE Battlegrounds was in the SMT5 Direct. And that was revealed prior to that Direct.