I wouldn't call someone averaging 17/11 last season a role player. Aldridge is arguably better than Kawhi, just sacrificing stats because of the Spurs system. David Lee isn't a scrub. Parker/Ginobili are old but aren't scrubs by any means.
I'll just say if you were to trade any of the other players I listed above Kawhi outside of Durant(roles are similar, but Durant is a better isolation scorer and facilitator), every team would get worse.
Hahah man idk this is wacky.