An early research article which was quickly retracted stated that the novel Wuhan virus was weaponized. The article detailed the genetic modifications and how they made a standard coronavirus more deadly. The longer latency period, the ability to spread during the time an infected person has no symptoms, the relatively few viral particles required to infect someone, and the HIV DNA insertions, which set up a cytokine storm when the virus re-emerges after presumptive recovery from the initial infection. These were listed in the article as ways in which the genetic modifications they found in the Wuhan virus would weaponize the common coronavirus.
Based on that study, the reinfections we're reading about now were to be expected. Also, we can expect that the reinfections will cause cytokine storms and be more deadly than the initial infection.
Caveat: The Powers That Be immediately censored the study and demanded that the journal retract the article, which happened. I don't know if the article can still be found online.
This is a screencap of the study after it had been pulled: