I can't argue the fact of someone wanting to assemble the very best possible team, in fact, I doubt we'll ever see it happen again.
As you want my opinion, I'll be truthful, LeBron's Legacy gets diminished due to those same circumstances. 4-6 Finals record must be put into perspective though, 08' (inexperienced), 15' (injuries) and 18' (Cavs had no business in Finals, LeBron definitely carried them), need separate analysis, honestly.
Having said that, the Dallas choke job, not delivering on the promise of winning ring after ring during Heatles era, running from the grind, as well as calling himself King, he fell short.
LeBron and Curry can't be directly compared, two completely different players and styles.
Not one person had Curry leading any team to 4 Finals wins, I doubt even reaching an appearance.
But, we all know who was the focal point of Cavs defenses the two years Curry and KD were teammates, and it wasn't KD.
Golden State doesnt happen if they went LeBron's route. Team Building>>>>>>Big 3 Super Teams.