One in August focussing on Splinter Cell Blacklist, Rayman Legends, and Wonderful 101, followed by another one in October focussing on Batman Arkham Origins, Watch Dogs, Sonic Lost World and Assassin's Creed 4 would be good.
Actually advertise and promote your third party content, then maybe fans will buy it, and more third party support will come to the console.
Bet with Liquidlaser: I say PS5 and Xbox Series will sell more than 56 million combined by the end of 2023. (And over 130 million lifetime)