Joseph:
Your message sounds holy. But it is patently inaccurate. The secular courts are supposed to do their job. The Mishna of הוי מתפלל בשלומה של מלכות implies that. The halachos that mandate reporting (misidentified as מסירה) for serious crimes also expects this handing over of these serial criminals to the goyishe authorities also expect their courts and law enforcement systems to do their job. There is nothing about the secular courts that needs to follow the dictates of haloacha regarding testimony, witnesses, etc.
I may not be referring to all forms of crime, but certainly those that require, al pi halacha, the reporting to authorities, do not assume innocence once proven in the court. The halacha requires serial criminals (מצער את הציבור) appropriate for reporting to secular authorities. This includes molesters, thieves, murderers, etc. I defer to the Gedolei Haposkim to clarify the specifics. But I will share that the question about drug dealers has been posed to poskim many times before, and all say the drug dealer is a rodef. There is no halacha that obstructs the requirement to report to authorities, and actually requires it.
In summary, courts need to follow their mandate, and batei din their own. No one claims that a secular court that failed to follow the halacha based rules used to convict results in a conviction that is against halacha. It simply does not need to comply.