So, I think I figured out the issue as to why I thought NGS was kicking me because of a custom pack.
When I first created a custom pack (since normally, I would just use data folder loading from Abyss), I was kinda tinkering around with what mods I was including in my 232 update. I had MabiPack running and creating my second version of my pack WHILE Mabi was still running. Even though none of the mod files were in the Mabi directory anymore, NGS must've still detected that MabiPack was running, and booted me.
Today, I decided to create a third version of my pack. I only used MabiPack while Mabi WAS NOT running, closed it before I started Mabi, and it still kicked me. Rebooted Windows, and now I'm not getting kicked anymore.
Is it possible that NGS isn't JUST checking running programs, but also any programs that WERE running? If that is the case... is Nexon overstepping their boundaries of what they should be allowed to do? I guess that steps more into a legal matter than anything... but it seriously feels like an invasion of privacy if they're scanning so much to protect a dying MMO.
I mean, I get it from Nexon's point of view, that they need to do what they can to protect the game from malicious attacks. But, at the same time, it's coming across as overly "protective", invasive, and "big brother" like. I dunno, maybe I'm just overthinking this...