I'm well aware that this could be unrealistic but hear me out.
Toronto Raptors: Acquisitions: De'Andre Hunter Tim Hardaway J.R Dereck Lively II 2 FRP
Losses: Pascal Siakam
Explanation: The Raptors have no direction and the front office has no idea what to do what the current roster. I think the team should start a rebuild and this trade can kick-start it. Acquiring a young big man in Dereck Lively could potentially replace current center Jakob Potel. Getting De'Andre Hunter could provide needed depth at the SF position and he could be the O.G Anuoby replacement should he leave in Free Agency. Getting 2 FRP is the perfect amount of picks, combined with young players to make the Raptors a fun and young team to watch during their rebuild.
Atlanta Hawks: Acquisitions: Pascal Siakam
Losses: De'Andre Hunter Clint Capela 2 FRP
Explanation: The Hawks have been a mediocre team for the past few seasons and I believe that they need a 3rd star next to Tray Young and Dejounte Murray. Pascal Siakam has been linked to the Hawks since last off-season and it makes sense for the Hawks to make an all-in move to get him. Trading Clint Capela allows young center, Onekya Okongwu to be the starting Center. The P&R combo that Siakam and Young can create together will be elite and very scary to an already deep Eastern Conference. Trading Hunter will suck for their future but he's been a disappointment since his rookie season so I think Hawks fans will be pleased with him gone. The main thing is that they lose 2 FRP but if they're set on contending then this is the move. Another risk of this trade is that there isn't a guarantee that Siakam will re-sign a new contract after this season, thus this trade could be a risk for the future.
Dallas Mavericks: Acquisitions: Clint Capela
Losses: Tim Hardaway J.R Dereck Lively II
Explanation: The Mavs have been very solid this year but there is one thing that stands out as their biggest flaw, their defense. Dallas has been rumored to be interested in a Clint Capela trade and this could be the one. I feel like Mavs fans would be mad if they gave up on Dereck Lively but I feel like Toronto would like to add him. Other than that, I think the Mavericks would accept the trade as they add a true big man to pair with Luka Doncic and Kyrie Irving. On top of that, trading Hardaway J.R leaves the starting SF spot for young forward Josh Green to start,adding more defence to the starting lineup.