I think at this point, the team could really benefit from putting Walker on the bench. Of course, it relies on White getting back - and staying back. But I truly don't think the Spurs are as bad as tonight's showing, they just aren't running good lineups nor gameplans (not good in relation to the teams' ceiling, which is of course not championship quality or near it).
Lonnie would take the ball away from both Patty and Mills, get expanded opportunities to create shots for himself and others (and actually shoot the ball, since he might feel more "authority" to take shots over bench players than starting players), and relegate the last two to their preferrable spot-up shooters roles. White on the main unit would give us much needed playmaking, easy looks, would feed Poeltl like no one on this team can do, and would also make a lot of shots.
LMA being back would also help the team, though to a lesser extent. But without White, we just can't get going, tbh. Also not a coincidence that we lost badly the first game against the Lakers, then fought it to the wire with White, as rusty as he was.