Several points to make regarding the Holiday thing.
Equating Holiday to Brogdon ignores an entire half of the game. Holiday's offensive impact is similar to that of Brogdon when adjusting for differences in usage and role, but Holiday is a defensive monster while Brogdon... is not.
Jrue and White do not have skillsets that suffer from redundancy. This isn't a case of two shoot-first iso players fighting over the ball. Versatile defensive players make each other better, not worse. Versatile team-first offensive players make each other better, not worse. So the idea that D White does a lot of the same things that Jrue does is not a valid argument against having both of them.
RWilliams doesn't cleanly match salaries with most of the other guys mentioned, with the exception of Gafford. While this is a bit of a nitpick, it does mean that we may be losing Pritchard and/or other role players in an effort to bring back one of those guys. Arguably, keeping Brogdon (and assuming we could patch up our relationship with him, which wasn't a given) and acquiring Anunoby for RWill + PP + filler + picks (for example) would have been worth it this season, but OG is due for a substantial pay increase that we may not have been in a position to give him.
I'm happy with our current setup. Throw in the fact that Jrue was probably my favorite non-Celtic player before we acquired him? No-brainer for me.