I don't like to fill in the condition for my cards because I'm rough on some and don't want to be constantly updating their conditions. When editing a card, I can select a blank entry for condition (which is how I like it). But when adding cards to my inventory with the "advanced card options" add, I am forced to select a condition. So I have to immediately edit any cards I've added in order to clear the condition field.

This is affecting me for Magic: The Gathering, but I'm not sure if it's the same for the other TCGs.

I have not run into this as that much of a problem yet, but the ability to make various options in advanced card adding "sticky". That is to say use previous options selected by default for the next card.