I think that the absence of late Mangbau, Siatula and Ngadiadia in Kinshasa who all decided to settle in Europe killed and them not really prepared a new generation. Esobé who came from Mangbau started also doing it, but only occassionaly and he quickly stopped. I don't think he even recorded an album. Actor José des Londres than having the role of King Kester Emeneya
Also don't forget that many of Ngadiadia's generation had to desire to become musician, but were never accepted in bands. Siatula was never taking seriously in street bands and when he saw Ngadiadia having his band, it motivated him to start also his own band. He recorded some albums with Swabala in Kinshasa who are nowadays very rare. It pissed Ngadiadia off, Ngadiadia saying that Siatula was copying him.
late Mangbau for tried his luck in Viva la Musica but got rejected. Later when he gained fame along with Ngadiadia, he started to do occassionaly animation for Victoria Eleison, being a huge fan of Emeneya. The moment he split with Ngadiadia, he formed next to his comedy-group also his own band. He refused to accept Al Pacino, wanting himself to become the lead-singer and being afraid that Al Pacino would take all the spotlights, knowing that his singing-abilities were not really strong. Like Ngadiadia, Mangbau would record multiple albums and bands would adopt many of his slogans "niawu alie chiclet", etc.