Sorting Perch Blocks by the newest Block

Hi Guys,

A client is using Perch Blocks to display multiple Lightbox galleries of different projects. Every-time she adds a block, it automatically appends that block to the bottom of the blocks list within that region in Perch. As these blocks start to grow it can be quite difficult to manage them and they have asked if there is an option that new blocks added to Perch, append to the top of the list first.