Update: I guess it was Adaptive Roads, once I uninstalled that, Move It! worked once again on Linux. Truly amazing. Thank you for your help, really helped me out. I'll still post a crash log if I get one soon, however.

I'll update as soon as possible, Steam isn't wanting to verify files or download workshop content on my Linux drive, so I'm currently on Windows. I unsubbed Adaptive Roads and now Harmony (redesigned) works on this drive, so that's a plus.

I should also add, I've got 24GB RAM, and over 64GB swap/pagefile on Windows and Linux, but I can definitely increase those. It does get pretty close to the limit, but typically there's plenty left.

I'll definitely read through what you posted and keep ya updated! I figured there'd be some wild ass issues (considering I've just done rolling mod updates and stuff), I'm surprised it managed to all load

So for background, Harmony (redesigned) will only work on my Linux drive, and the original harmony will only work on my Windows drive. OG Harmony on Linux will crash to desktop after loading all assets, likewise, on Windows, redesigned Harmony will crash to desktop after loading all assets, neither make it to the map, or even the cryptic text before it loads into the map. I have to swap between the two mods when I swap operating systems.

Currently, it appears the redesigned Harmony has an incompatibility with Move It! on my Linux drive. Seems to have broken yesterday (11/12/21). No amount of reordering their load order, or general mod managing, will make them work together. I can interact with the Move It! UI elements, but I cannot actually... well move anything. No green selection cursor, and I can't even draw a selection box, therefore essentially making the mod entirely useless.

Here's my Harmony report: https://pastebin.com/yQsK7J0y

I would really like to see this issue worked on, as Cities: Skylines performs SO MUCH BETTER on Linux than it does on Windows. For me, Windows makes the game a slideshow, whereas on Linux, I consistently get 60+ fps. genuine 40+ frame difference. Thanks everyone!