You underrate Simmons.  He had a bad few games against Hawks, yes, but that doesn’t define him.  Remember when Embiid got hurt and Simmons led the Sixers on a 16 game win streak?  It’s why he won rookie of the year over Donovan Mitchell.  He’s the best defender in the league too.  Embiid missed a playoff game in 2019 and Simmons had 31/9.  However, when SIMMONS missed the 2020 playoffs, the Sixers got swept.  Simmons is a major impact player.  Honestly, Sixers should keep Simmons, surround him with shooters, and trade Embiid.  Truth.