You can choose how you view the list, by choosing from the dropdown View menu at the top of your Bookshelf.
You can Post any item(s) on Hold easily by checking the box to the right of any item on Hold that you want to repost, and clicking Post. You can do this for multiple items at a time.
You can delete any item (on Hold or active) easily by checking the box to the right of any items you want to delete, and clicking Delete. You can do this for multiple items at a time.
At the time you mark each book received, you will have the option to choose whether or not it will go onto your Bookshelf on Hold. Books marked received "with a problem" will not go onto your Bookshelf.
This change does not affect the TBR pile or any other of your lists. Only the Bookshelf has been changed, to contain the Books to Repost list. This has been done to minimize redundancy and make it easier to manage your books.