That makes sense. If you aren't going to re-use the cards then it probably would not be much of a help.
Our pre-made cards represent some of our favorite character designs, so they are the sort of characters that we will use over and over again. I find the pre-made Followers and Allies very helpful.
Yes, we do have blank cards too . I think all of the card packs come with 1-3 extra blank cards, and there's the "Roster Pack" that is all blanks.
Oh, and these cards do not include pictures of the characters. So a Fierce Ally
can be just about any figure you want it to be.
Anyhoo, I think the cards work best if you are re-using the same characters frequently.