I'd settle for not having to click through three screens of "yes I'm sure" and opt-in doublespeak every time I want to "really, really, I promise you" use my credit card.
I'd just like to see more than 20 transactions at a time. I'm sure the sheer number of table rows isn't the reason it takes 6-10s to load the page! (Kudos to OP for mentioning the endless scroll.)