President-for-Life Xi Jinping is going to bequeth his country the same thing every other President-for-life ever has.
An ossified political and economic system as a graying and fading elderly generation of leaders seeks to hold onto power and influence from the upstarts who would supplant them and modernize and reform.
In fact, this very problem is what lead to the 10 year period for Chinese leadership generations (two five year terms). The issue of succession is the most important, and most intractable problem among great powers historically. Every empire, every major country has had a reckoning with that at one point or another. The Western World has entirely figured that out. Russia and China struggle as if nothing has been learned about how bad ruling for life truly is for a country, despite thousands of years of trying
So no, China and its leader have nothing to offer the Western world.