It amazes me how much of a failure Gotti was. He was a degenerate gambler, greedy, no common sense, drew too much attention to himself. The worst boss of all time. He didn't seem like someone who was qualified to be a skipper, much less a boss.
Everything you said is true. Even Gotti's most daring move--the assassination of Castellano and Bilotti, using shooters wearing identical hats and coats, and using identical weapons, to avoid positive identification--was planned and orchestrated by Frankie DiCicco.