Post paul kagame?

Paul kagame could be considered the defining individual of modern rwadnda. He's also a very controversial figure undoubtedly. But when I found out that we was 67 years old. The question that popped up into my mind is that what comes after? I could see him being in power for another 10 maybe 15 years at the most. But who could possibly replace him after he dies? Is there anybody with that kind of power and influence to suppress everybody else and maintain control after he's gone?