My second C:I mod/asset apocalypse: stupid mod questions from a guy with a subscription problem

tldr; i'm dumb and don't know how mod assets work, see below for questions

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I have a problem.

Every time I browse Reddit, this subreddit pops up and wonderful people post wonderful things, usually screenshots of their wonderful cities. Sometimes, they even provide a mod list for them. In my hubris, I almost always subscribe to everything because hey, more stuff is always better (and the modding community for C:S is insanely good).

Problem: I don't really understand what I'm downloading, content-wise, half the time. I subscribe to building sets. I get prop lists. I get mods (although I get what most of those do, thankfully). I get anything I can get my grubby hands on.

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As a result, Cities Skylines runs like ass, and the Loading Screen Mod reports thousands upon thousands of errors, and C:S occasionally throws up some interesting scripting errors too. I have similar buildings stuffed away in dozens of random tabs (a school as a unique building? sure! A church as a park? why not!). It takes me minutes to load C:S on my brand new PC with a screaming SSD.

Here's how I play the game; I find a cool map, I build the city more or less organically and lose myself in interesting traffic problems. Eventually, if/when I ever run out of space, that's when I start re-working interesting neighborhoods to look prettier. The last part almost never happens, realistically. I almost never plop down individual signs or props, unless I'm designing a city park.

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So, mod/asset questions:

1. Is there a tool that will analyze the error logs of the Loading Screen Mod that will help me resolve any missing asset errors?
2. Is there an external tool that can organize/analyze mod problems and find solutions for them? Something like LOOT for Skyrim mods (optimizes build order, finds errors in scripts, incompatibilities, etc)
3. Prop assets (signs, rubbish bins, billboards, HVAC units, etc) - do I need to download these if I'm not planning on using Prop Anarchy to plop them anywhere? If I download a building asset, does it automatically come with whatever props it needs? If not, how do I know what it's missing?
4. What the hell is a RICO asset, and does it differ from a Growable asset? I'm only interested in getting buildings that can grow under the right conditions, not stuff I'm going to place by hand (exception: churches and universities, but see below)
5. Is there a way to force-organize mods to be in a specific category? I have maybe 30-40 church/mosque/synagogue assets in my game, but they're a mix of health clinic, cemeteries, unique buildings, schools, parks, and landmarks. I'd love to just have a tab that says "churches".

I'm sorry for the dumb questions, but it finally struck me as I subscribed to yet another 40 billion assets that I really have no frickin idea what I'm doing.

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Thanks for your help :)

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