Just based on potential impact, Tyreke Evans. He is capable of running an offense and has turned into a respectable three point shooter, and he has typically been adequate on the defensive end over his career. Lou Williams is a better offensive player this year, but is a defensive nonentity. I don't like Hood and Bradley as shot creators, which is the skill we should be looking for IMO.
I don't know what 30 games of Evans is worth, though. That's a very short window that he has to jell with the team, and if it doesn't happen quickly, you gave up a decent asset for nothing. I also assume that it's very unlikely that he re-signs with us given our cap situation. But if our '18 first gets it done, then I'd do that deal.