I'm insanely interested in this Jerami Grant watch. Patrick Williams in Chicago is intriguing. I'm also curious about the Jalen Brunson (from Dallas) idea.
This seems like an understatement, even while you are making it pretty clear they have a ways to go. Not including Grant, who I think we can plan on not being here, we have 2 players that look like they could be starters for a good team. Cade and Saddiq. Everyone else would be better suited as a rotational piece at best.
Trying to be realistic but not totally devoid of optimism, I would size up the Pistons roster this way (accounting only for pieces who are reasonably young)
Cornerstone pieces: Cade Cunningham
Quality starters: Sadiq Bey
Solid rotation players: Hamidou Diallo, Isaiah Stewart
I would also categorize Jerami Grant as a quality starter and Kelly Olynyk/Trey Lyles as solid rotation players, if you consider guys who are a bit older. Personally I think that Frank Jackson might be a solid rotation scorer, but I'll play it safe here and leave him out. Maybe a guy like Saben Lee, Isaiah Livers, or Killian Hayes can grow to be a rotation player, but they aren't there yet for me.
So to me, you probably need three more quality starters as well as some good rotation guys going forward. Ideally, one of those starters would be another cornerstone piece and close to Cade's level. A potential Jerami Grant trade is important, I think that you've got to get a guy back who can hopefully be a quality starter or is at least a solid rotation guy. I think something gets done this trade deadline, but I honestly don't hate the idea of waiting until after the draft.
Our 1st round pick this year is also pretty vital. I think you're targeting a guy who can at least be a quality starter around Bey's level, and if you can get the guy who can be the #2 to Cade's #1, that would be a big win. I think all four of Smith Jr., Banchero, Holmgren, and Ivey have that upside while also carrying some pretty real warts.
Griffin's money coming off the books will give the Pistons some cap flexibility this summer, and if you deal Grant that would give you even more. But in the modern NBA landscape, I don't think the Pistons are realistically going to attract your top, top free agents. Jerami Grant for example is to me probably pretty close to the ceiling of player that the Pistons can attract in free agency, maybe you can get a guy a notch up from that. But Weaver will definitely have an opportunity to add some solid rotation guys and maybe even a good starter, which could go a long way.