Perhaps you expand the trade to include Atlanta
Atlanta - Smart, Richardson, 22 BOS
Philly - Collins, Hunter, Schroder, 24 BOS (top 4)
Boston - Simmons
Not sure Philly or Atlanta would do it, but I do think that is reasonable value for both of them depending on how Philly views Collins and his ability to play in between Embiid and Harris. Boston could probably add in a young player or two to get it done if needed.
Interesting idea, and reasonably balanced value but I think I would rather have Collins, Hunter, Schroder, and a Pick than Simmons. Simmons is a head case who has not played competitive basketball in a year. He is a huge risk. He might come back from this all at peace with the game and be better than ever or he might never be the same. You just don't know. It is a huge risk. I think BKN is a better place for him. Durant can take him under his wing.
There was a point in time where I thought getting Simmons to run with Tatum and Brown would be great (I would slot him as a PF though, not PG). I am so over that now.
Collins is definitely more of a known quantity than Simmons, but I'm not sure how well he'd fit with Rob and Simmons has a MUCH higher ceiling that if Simmons figures out, Boston would actually be able to compete for a title with a top 3 of Tatum, Brown, Simmons. Unless Tatum is winning MVP's, I don't think a top 3 of Tatum, Brown, and Collins is a surefire multi-year contender, certainly not the way they could be with Simmons.
I am not worried about the fit of Collins and Williams. I actually think they would be fine, Williams more the picker, defender, Collins more the perimeter, but I would expect Ime and the players to figure it out and make minor adjustments if needed. Collins is a highly skilled big, exactly what we need, to me, a near perfect fit.
Yeah, I get the allure of Simmons. As I said, I was really high on him. The way he moves, the way he sees the court, at his size, a rare talent. Too much risk now for my appetite at least when giving up the players that it would likely take to get him. BKN is not the team where star head cases seem to go. They can have him. I'll take Collins and take my chances.