What does Burks do that no one else can exactly?
Make really cool layups?
It's not get to the FT line, because Hayward has shown to be one of the better players in the league at getting to the FT line (while Burks can do that too, and possibly better than Hayward, it's not a skill unique to Burks on this team).
The only thing I can really say on Burks is that he can score out of an ugly offensive set and doesnt need a system. So when the rest of the team looks like ****, Burks can still score. But I'd rather have a team that can consistently run good offense, like Hayward and Hood can provide, and that consistency would increase with a PG like Teague.