Not to prepare for Gotti.

He couldn't understand the ambition Gotti carried on. Plus, he had not a loyal muscle power behind. He could've used Roy DeMeo as a muscleman against Gotti and whole his crew.

Another was keeping Dellacroce as underboss. Dellacroce might hadn't moved on him but even though, Gotti and whole the rebels against Big Paul grew stronger under Neil's wings.