As it currently stands, a player has to pick up every item he/she wants to keep before switching houses, or else the item would be lost. I realize people can currently rely on friends/neighbors to help move the items, but I think it would be nice to add a service that does this automatically. Therefore I would like to suggest adding:
JuJu & Sons Moving Company
For a fee, the player can hire the moving company to temporarily store, and then deliver items to their new house. The catch is, there is a guarantee that the JuJu & Sons Moving Company will steal at least one item at random during the move. A $1000 move would steal five items, a $2000 move would steal three items, and a $3000 move would steal only one item.
This way, the player would have to deal with a small hassle during the move (hiding the valuables in bags they are carrying), but wouldn't have to deal with larger logistical issues of moving every item. The prices could also vary depending on how many items are being moved.
I think as the world opens up, many players would want to move, but might not be willing to part with their house due to the work involved. By streamlining the moving process for the player, it would help encourage extended exploration of the world, especially for long time players. What does everyone think?