This doesnt really have any bearing on anything but I was wondering why all the letters in the collectors symbol things on every card other than the ones in the core set are an F?

I got a few friends into the game a few weeks ago and that was the only question they had that I couldnt anwser o.O

"F" stands for "fixed." As in, when you buy a chapter pack, you know what you're getting because the contents are "fixed."

It goes back to older CCG versions where cards had C, U, R on them which was common, uncommon and rare. All cards are fixed in LCG's so all cards have the F on them.