Please explain your feature request to the best of your abilities:

Create a Towny option/setting/blacklist to exclude chests, barrel, shulker boxes or other placeable containers from wilderness block regeneration.

On our server we use ReviveMe and when players are downed they are allowed to place blocks including containers to transfer their inventory in case they die before being revived by another player. Example, player is downed by a creeper in the bottom of an explosion hole, places a chest with their limited movement and time and the blocks regenerate over the chest vaporizing it before they can return and pickup their items.