Every time you create a new deck its added to the bottom of your deck list.
Being able to move your decks around to order them as you please on your list would be nice. Adding icons to the mix could be nice (for example, a musketeer icon for a musk rush deck, a boat for water decks or a III icon for FF decks) to improve the readibility even more.
I don’t know if these changes are even posible in the current engine (which is a polished version of the old one)