Congratulations, you made him a martyr.

That's what he and his cult already believe and will continue to believe no matter what happens or doesn't happen.

His poll numbers are going to skyrocket

Nah, he has more or less reached his ceiling. He has a number of people who are members of the cult and would never abandon him without literal cult deprogramming and the majority of the population would never vote for him after what he's already said and done.

You've hired a bunch of extra security for yourself , everyone on your team right down to the custodian, and their families, right?

You mean like is already the case now that he's slandering and vilifying most of them with no consequences to himself?

There's a reason why nobody has been willing to do this yet. There's a reason there are so many reports about lawmakers unwilling to remove Trump

True, but not the one you think.

There's also the optics that Trump already spins on the daily about jailing a political opponent

THAT'S the actual reason.

that he is the leading Republican candidate which, like it or not, is going to give him a lot of leeway as judges are loathed to curtail political speech.

"Like it or not" is an awfully casual reaction to the powerful getting blatant special treatment, which is in itself against the law

And before anyone says "So what are we supposed to do with him then? Just let him keep doing what he wants with impunity?".......that's the exact question our entire judicial system is currently tasked with answering

The question is literally answered already. Letting him get away with constantly and blatantly breaking the law is in itself negligent bordering on being criminal.