This is the problem, the characters that end the series are very different from the ones that started the series. Some call it and evolution of a character, or a character arch, others think David Chase wanted to punish these characters.
If it were Paulie from season 1, i think there is potential for him as a decent boss. Paulie from season 3-6.2 would be a disaster. The family would be eaten alive by New York, if they don't rot from the inside first.