I rebuilt 60052 into a different train with different cargo and vehicles, using only parts from the original set (excluding extras). I'll share the instructions at some point, and maybe try another
LEGO® 60052 Cargo Train - ToyPro
LEGO Train MOC | Modification BIG cargo terminal |Speed build LEGO MOC - YouTube
Modifying the LEGO City Cargo Train Depot to work better in my City