I think that's the Sixers best lineup with Brand coming off the bench. Iggy and Young haven't been as effective out on the wing as they are at the forward spots and Brand simply hasn't been good enough to make up that difference. Brand's defense at the four has been poor, particularly against those quick or perimeter orientated power forwards.
Elton Brand will be a lot more effective as a sixth man when (1) he's matched up against more backup players, less talented offensive players (2) allowed to be the primary offensive focus of the team while in the second unit (3) allowed to play the center position instead of power forward where he's more effective defensively. I think all those things are helping Brand have a higher impact on the game.
The Sixers bench is horrific too. Having a guy like Brand who off the pine will help take some of the pressure of guys like Kapono, Carney, Green and Ivey.
Jrue Holiday looked very good against the Warriors the other day. In the past I haven't been impressed with him but he could be serviceable big defensive minded point guard alongside Allen Iverson. Somewhat similar to what Eric Snow brought to the table. Then allow Louis Williams to come off the bench and be a sparkplug alongside Elton Brand. That would be a nice seven man rotation ... if Holiday can do enough to stay in the rotation.