Looks like playoff rotation will be something like this if Manu is back:
TP /Mills
Green/ Manu
Kawhi/ Anderson
Gay/ Bertans
LMA/ Pau
If Manu isn't back:
TP/Mills
Green/ BP3 or White or Forbes or Murray
Kawhi/ Anderson
Gay/ Bertans
LMA / Pau
I have a hard time believing Pop will sit Tony. Even if Tony is 60% of what he was last year, Pop would still play him IMO.
With Manu not back, Brandon Paul, White, Murray and Forbes will compete for minutes at the back up 2. There will only be minutes at the 2 for one of these players when it matters ( playoffs).
While Kyle Anderson get minutes at the back up 3.
Davis Bertans will get minutes at the back up 4.
Joffrey Lauvergne will be insurance in the front court.
Overall not much has chanced except Tony, Pau, LMA are likely to regress.
Gay will take 25-30 minutes collectively from Lee/Dedmon/Simmons, while ONLY two players from the Kyle Anderson, Brandon Paul, Bryn Forbes, Derrick White, and DeJounte Murray cluster will carve out small consistent 10-15 minute role's.
Overall, they haven't gained ground. The gravity of the liabilities defensively w/ Tony, Patty, Pau will be too heavy for them when it matters most.