I get your comparison to the Zimbabwean team that had the Flower brothers (our Kane and Ross) with some very useful players around them, but Zimbabwean crickets biggest crisis that followed the retirements was the political interference, thinking back to when Olonga a very good bowler had to cut his career short to go and live in England.
I'm not sure all is well in Australian cricket at the moment either with that comparison. Their best long form players are now well into their 30s, they have no idea what to do post Khawaja and when Warner retired they were so clueless they tried replacing him with a T20 slogger who didn't have the patience for test cricket and didn't last very long.