Re: Mods folder organization
A lot of nested subfolders might slow down your game but otherwise, they shouldn't cause issue. If you have a lot, you can also look into merging cc with S4Studio (only cc, not mods as those need updating with almost every patch). Do keep the origin al files in case the cc also will need updating. So you know what you had.
You can have up to 5 nested ones (within each other down to 5 levels total)
So your suggested structure would be fine.
Only exception to this rule are Script mods. Those need to be in the mods folder. You can create one folder per script mod within the Mods folder but no further nesting
For example
Mods
MCCC
All Files of the mod
Sims Info
All Files of the mod
etc
