Quick suggestion for something I noticed seems to be missing, there is the bar graph view for the amount of storage used, and it can clearly be broken down into each backup set that you make (so in my case, each of the hard drives), however it’s only on a line graph, with not enough resolution in terms of size increments.
The data is clearly there though, so adding the feature to actually show the exact amount used for the backup set, when you mouse over the point, would be a good, and in my opinion fairly essential addition.
edit: also noticed that if a backup was completed more than one day ago, it doesn’t add an “s”, so a backup of one of my drives was completed “2 day ago”. Very minor thing but figured I’d mention it.