I've thought about this.
We'd probably have to unload Hayward's contract and hope Horford doesn't opt in (maybe re-signs on a team friendly deal. If it means accommodating KD, I think he would.) Getting rid of Hayward's contract would be a very tall task.
We'd also have to cut ties with Rozier, Morris, Theis, Wannamaker, whoever else is a potential free agent (restricted or unrestricted.)
BUT getting KD would be WELL worth it (and we wouldn't have to trade Smart, Tatum or Brown.)
It's not happening but if it did, margaritas are on me.