Perhaps the next Deng Xiaoping may appear, or Zhou Enlai, or the modern version of Mao Zedong, and in this age not to lead a sandwiched, poor China but a strong, advanced one. All these figures have good and strong leadership, nationalistic, clean and strong characters, only the state of nation was still poor, backward, weak, or undeveloped back then! When we all read and study the history, we should put things in the right contexts, it's of paramount importance for the accurate understanding!
One day when the time comes for Xi to step down from his formal positions, he may still get involved by taking the back stage role like Deng Xiaoping in the past, if necessary. Top leadership is not just for every one. And nation should not gamble its fate! China definitely needs not to follow the Western political system! Stability and Harmony are the key foundation for the most populous nation... any threat to these qualities is a dire threat, and must be dealt accordingly.
And who ever be the leader, he
needs to possess these basic qualities: nationalistic, loyal to the nation and party; clean/incorruptible (not a personal material seeker); strong character; smart, a person of acumen; side by people's and national interests (unselfish; not a self-centric personality); wise & far thinking... have a good understanding on Chinese history...
And WHY am I a staunch supporter of Xi Jinping leadership???

Because he has the qualities that I listed above as the
"necessary basic qualities"!!
Watching today's world, seeing the qualities of leaderships in the Western nations such as the USA, CAN, GBR, AUS, FRA, ITA, SPA and many others within NATO or EU... there is nothing to envy from their leaderships and political systems... luckily they don't have the population the size of China, otherwise I can't imagine on how can they take care people of that many. Lucky, most of them are already rich from the past wealth accumulation, and in general the population of each nation is relatively small in tens of million magnitude, and some like CAN and AUS are granted with lots of wealth beneath their lands yet their populations are small. Only USA with its 333 million is big among this class, but it has the WRC $$$ printers to assist. And country like FRA still needs to suck the wealth out of the 14 African countries through the CFA Franc scheme! But in principle the population size is an extremely important determinant here!
“Western democracies are ossified bastions of self-perpetuating interest groups, aided and abetted and legitimatised by the ritualised spectacle that we call elections”