Without question! Replace Gordon with LeBron and this team wins the title.
Why would the Lakers do that?
Like the Lakers were going to instantly become a 45 win team?
I think LeBron would ruin our young guys, ruin our coach, all while not helping us win as much as people think he would. Plus, goodbye to Kyrie.
So what you're really looking at is:
Horford -> aging
LeBron -> aging quickly
Tatum -> never getting the touches or coaching needed to develop
JB -> see above ^
Rozier / other -> Kyrie would go to New York and play with KD.
Replace Brad with Ty Lue and bingo! That team is just a worse version of the current Bucks squad, and would get trounced by them, Toronto (assuming Kawhi stays), Philly, KD & Kyrie NYK, and maybe Indy.