While being able to change the cards font styles is great, there appears to be no way to change the user interface scaling. On a larger iPad tapping some of the smaller elements (text/icons/etc...) is a bit difficult - especially when moving fast through editing. Thanks for considering!
Mochi
Pretty much every UI element is customizable with CSS. I've been heavily editing it for a while now. Can you show me exactly the elements you want larger? I may be able to give you the CSS to import.
If you're already familiar with this sort of thing, have a look at my theme here.