Not sure where would be best to put this. Maybe on the account Edit menu you could add a Share details item.
It’s not something I have used a lot either, but very useful when I don’t want to go into other apps to get details.
I’ve used it 1) when I’ve wanted someone to pay into an account I don’t normally use to receive payments and 2) when I want to pay into an account, but I don’t have the account number saved in whatever app I’m using.
I’ve also used it a few times to double check the account number when making large transfers between my accounts.
I admit, these are pretty rare cases.
If you do add this again, it would be good to be able to add account details for manual accounts, BTW