I would agree that this case is odd, and the construction is unusual which I am sure will garner significant attention from higher courts. However, I am not sure that your argument is anything like as strong as you present - it seems more like playing with technicalities than the DA's case!Instead, they have the most comical legal theory ever contrived.
The conviction is for felony falsification of documents... which is only a felony if it has the intent to defraud to aid or conceal another crime... and the other crime is to conspire to promote Trump's election... which is also not a crime unless it is specifically pursued by illegal means... and the "illegal means" they use to justify that includes falsifying business documents... So if the falsification alone isn't a crime they can charge him with, they don't have a crime to make it illegal promotion of an election, which makes the falsification not a felony, which makes it beyond the statute of limitations, which makes it not a crime they can charge him with.
1) Crime A is a misdemeanour unless connected to another crime in which case it's a felony. Crime B is trying to do X by illegal means. So if someone attempts to do X by Crime A, then both Crime B applies, and Crime A is a felony. Sounds reasonable.
2) Something being outside the statute of limitations does not mean that it was not illegal. It means someone cannot be specifically prosecuted for it.
Let's say someone commits a crime A and the statute of limitations has passed. However, that Crime A is then found out to be part of a wider crime, B, that is within its time limit. They cannot specifically prosecute someone for Crime A, but they absolutely can take the evidence of Crime A to a courtroom to present before a jury for its relevance to Crime B, and the jury absolutely can decide as part of their reasoning that A was illegal with reference to Crime B.
So, now just put (1) and (2) together...
I get this reflex reaction, but I think it's uglier and less wise than you might think.Which doesn't matter, cause a jury in New York all know that their lives are ruined if they don't convict Donald Trump, which is why venue changes for trials exist, which was denied here, which is the easiest way to throw out this conviction.
Firstly, it's incredibly unpleasant to casually defame 12 people you know nothing about except their place of residence: you are essentially arguing that they are all unethical. That reflects more on you than it does on them. And not just those 12 but all New Yorkers and possibly Democrat voters, to suggest the entire city cannot supply 12 fair-minded jurors, even with a selection process designed to weed out bias. In that sense, your comment is a morass of prejudice and divisiveness that's a lot of the USA's problem these days.
Furthermore, you could also consider other factors. Such as that credit might go to the prosecutor for laying out what appears to be a very clear and cohesive narrative, thus making what was hardly a slam-dunk into a convincing story. And in contrast that the defence lawyers may have done a very poor job at defending their client.