I totally know what you mean and I can give some visibility about why that’s the case.
In general we don’t have a roadmap, the closest would be Making Monzo. Back in the day (really back in the day) when we only had one product team we would indeed work in a sequential way, feature after feature. Certainty was high and I could come to the forum often and say “this is what we’ll build next”. Good old days
We no longer work that way, we have multiple product teams working in parallel, all of them working super hard to optimise different parts of the Monzo experience. None of these teams work directly on custom categories or even budgeting, which makes tricky to prioritise this kind of work. It’s really not about transparency, we really tell you everything about the things we’re building!
In this case however (and that’s why I said I think we’ll probably build it), in the new navigation project there’s the opportunity to revisit part of the work we did for Summary so I can see fit to go and bring custom categories (at last!) to the product… but this might change as the team actually gets to that point. They might prioritise something else if they consider it would have a bigger positive impact than custom categories. Does that make sense?