@rennov
True. Sun clan will get bitten because they can't keep their zeal in check. Or we could say Zhao Yu must be removed because his aim is
Sun clan's supremacy, not working for
people. By that definition, he's in the same vein as 3 other geniuses: Yuan Fang -- worked for his own gain; Xun Yu -- supported Imperial Han; Guo Jia -- all for Cao Cao. It's not coincidence that all the survived guys have very questionable loyalty (or half-baked loyalty at best), right?
After his death, those schemers might keep Sun clan relatively-strong-but-manageable to balance things out.