To add to the earlier demographic question - my wife and I are in our early thirties and only use the joint account. (Individual accounts always at zero balance).
We would also like the joint account to get feature parity! Another item to add to the list is the fact that the emergency access (web.monzo.com) doesn’t work for joint accounts!
I mentioned it to the COPs a few months ago and they just said they would “add it to the feature request list”. I’m not super happy with this - I feel this should be prioritised.