I think we should be able to make our own categories for spending
I don’t think that’s likely for these reasons
but an update to categories is coming (ish), Hugo mentioned yesterday that
in the meantime, I’d recommend tagging your transactions with Emoji, I’ve explained how I use them here
which enables you to count the number of transactions of a particular type, although getting to totals / average spend is still a challenge.
I think it needs more e.g. health or lifestyle and especially the ability to break down cash transactions into correct categories.