Man that's probably the most unanswerable question one can ask, but you did so since I'm first on the list here I go.
I just think Lebron singlehandley dictates the flow so much(often in a negative way than most folk realize), along with being the only constant in the scenario.
Now yes he's came up short many times, which ain't being discussed at the moment...
Replacing the Heat and Cavs with any team over that 6-7 stretch.
GS - only been hot for a few years, hint that's why they have the players they current have.
Spurs - probably could because they run a system, injuries over that time period have hurt them.
Clippers - while CP3 been there almost that same time period, they wasn't the Clippers who they are today. Injuries affect this team also.
Okc - injuries killed this team, quite often also
*When I speak of injuries, I'm referred to the best player or players on the team(Chris Paul, Tony Parker/Tim Duncan & Westbrook/Durant).
* Lebron affecting in a negative way - he controls the offense so much, when he sits the subs can't/don't make the same reads and plays that he does.
So often the team try's to run the same sets but there's way to many times they look confused.