If you’re going to allow us to exclude some expenses from the breakdown i would suggest allowing us to excludes portions of an expense too through a similar flow as the “split expense” feature.
If I pay for a friend who will re-imburse me later (regardeless of how or when) I’d like to only count half of that expense in my breakdown. This is the last problem i’ve got which is still forcing me to use a spreadhseet to determine my actual expenses every month. (=monzo expenses - whatever i’m owed)