I totally hear you.
The problem with “naked” percentages is that it’s hard to relate them from month to month (you can’t compare proportions if you don’t have the order of magnitude). Apart of that I’m a bit afraid on the classic “financial implications” of percentages, typically associated with rates and fees… that’s one of the reasons why we’re keeping it just in pounds for now. But we’ll try new ways to improve it, for sure.
Regarding the deltas, yes, that’s exactly the purpose but we thought it was a bit overwhelming to present so many numbers and things going on in the same room… even though we have different layers of information we were concerned that the output could be a bit chaotic. That’s why for now we’re keeping it quite simple (and probably a bit less powerful that could potentially be) 