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 INS60052_INS_N – Brickbrowser
Building Instructions - LEGO - City - 60052 - Cargo Train
LEGO 60052 Cargo Train Set Parts Inventory and Instructions - LEGO Reference Guide
Cargo Train 60052 | City | Buy online at the Official LEGO® Shop US
ONLY instructions Books 1-6 Lego 60052 Cargo Train railroad; no bricks/parts 673419207805 | eBay