Been using a developer version of the iOS 14 Beta for the past few weeks now and after talking to someone at Monzo, it would appear there are currently no plans to introduce a new version of their widget which would be adaptable along with being stackable.
I have mocked up a couple of ideas on what they could look like, started with the smallest widget which would display in the summary circle format and then we have the medium size which takes a much more linear approach but while also showing you the last 3 transactions made on the Monzo card.
These are both a 2x2 widget, a 4x2 widget as well as 4x4 widget which I am yet to put a proposal together for on how to maximise the use of the available space. That is even if Monzo wanted a 4x4 set.
If you have any ideas on improvement or a way in which we could utilise the space available better, then feel free to let me know!