Pullable carts, idea for effective bulk transport while still keeping it balanced gameplay-wise

[Parco]

One thing i'd love to see in the game, especially now that we have a rideable mount is a functional cart for with transport capability, plenty of times i had to end loot/harvesting runs early because backpack got full. But of course such a thing would quickly be overpowered unless it was balanced somehow and I think I have some good ideas for it

• carts can be built as soon as player has hammer, chissel and saw
  • cart is made from a main body part, 2 wheels and the pulling handle
    • every part has different versions depending on the ingredients
      • wooden parts held together with sticks and rope is the simplest and least durable version
      • carts can be made of different quality parts with metals which can be swapped individually later on
  • versions with metal parts have more durability and storage
    • first version maybe only has storage similar to 1 double chest
      • larger lategame carts have storage similar to maybe 3-4 double chests 
        • lategame carts also gonna be innefective for the player to pull alone even while empty
  • carts can be pulled by both player and the mount
    • cart has its own weight system based on stack size and amount of inventory slots filled
      • player not gonna be very effective at moving filled carts

Ofcourse this large item capasity would be very op even with the weight/speed penalties, so:

• • carts are easily damaged/destroyed by even a 1 block drop
    • the heavier the more damage
      • less damage if landing on soft ground
    • maybe need spare wheels if this happens/wheels are the first to break
      • broken wheels and body part will only be usable for firewood
        • parts with metal can be harvested with a hammer and chissel for nuggets of the metal
  • for effective cart usage the player has to make hard floor roads and slopes(stairs or chisseled blocks, the less of a slope it is the easier it is to pull up)
    • driving on soft ground such as sand, gravel, dirt, etc will add to the weight with a multiplying effect based on its inventory weight and how soft the ground is
      • a filled cart even with a mount pulling it might be impossible to move while its on some soft blocks
  • storing food in it might attract animals similar to troughs
    • bigger animals might damage the cart
    • animals brave enough to face the player can attack even while player is pulling the cart
      • will focus on cart first because of the easy access if its prefered food is stored