I think a few things for me.
Cashback, both on bills and on purchases, the latter offers that actually change and rotate.
Budget and summary actually merging into one and a slowdown of features. Only putting them in when they’re actually finished.
Oh and metal cards as an optional purchase, I would love that option. I miss mine.
EDIT: I forgot about pan device support. A proper iPad app and ability to login into both at the same time