I was hoping you'd look past the joking and answer the questions.
Everything you posted so far save for 2 things is some petty shit. Super petty. Even the 2 things that weren't petty were likely not as bad as they seemed. The cheating might have been a legit complaint, but that depends on when you opened your marriage and why. If she was just fucking dudes while the marriage was open it's a nothingburger. The most serious one is the hooligan hurting your daughters. But I gotta wonder how badly they're getting hurt that you haven't whipped his ass yet. It's not even serious enough that mommy cares. I know you said she was a narcissist, but I noticed that when you talked about how she does the bare minimum, it's always the bare minimum that she AND the girls need. So those girls are something she takes care of. Also, if they were getting hurt that bad, then I don't know why you're not focusing on that and forgetting all the petty bullshit. It sounds like she was trying to respect your wishes to avoid the hooligan, but it's not reasonable to cut her off from her family. That's some cult type shit right there. Meeting at the mall had to be better than meeting at someone's house. At least in that situation everyone will keep an eye on the kids.
With the way you're bringing up ancient minor slights and needling your ex, I legit think you might be the girl in this relationship. Did you think reversing the genders in your story would make a bunch of misogynist shitlords like us rally to your cause?
In summary. Tits or GTFO