Marketplace Download Data stored in hidden folder location
The Maker Pack downloads are unexpectedly stored in the following hidden directories:
Windows: User > [Username] > AppData > Local > TS4
Mac: Macintosh HD > Users > [Username] > Library > Application Support > TS4
This has several downsides as you can't move or redirect this folder, they are hidden system folders. The biggest issue with this is being stored solely on the internal drive, you can't put them on an external drive if running low on internal storage. and you also can't redirect it to a bigger internal drive. This can lead to issues when these drives are full.
The expectation is Maker Packs are installed in the same location as the game and DLC, as directed in EA App, so the user can make sure they have the installation files in the same location where there is enough space. By default the game installation location is for both base game and The Sims 4 pack folders:
Windows: C:\Program Files\EA Games
Mac: Macintosh HD > Applications > EA Games
There is an indication on the GUI that lets you know who much space you have left but that isn't that easy to find and you won't see it if you never go to My Collection > Maker Packs > Manage Storage