I get what you mean. I can think of several times when I would forget if I have a sharpened version of my school blade or a regular version, and I would end up picking the one I already have on. What they should do is maybe change the look of the blade on the charm itself, or add another blade to the charm so it looks like a bladestorm charm but the colors of it correspond to the blades school.
I agree. Needed even more - a way to distinguish pet sharp from item sharp, and any enchanted cards in our hand after a reshuffle. They all look the same, so there is no way to know which we have. This has been a problem for years, and it's getting worse now that there are more sources for sharp and potent. Pet and item blades also look the same. Changing the coulour or pattern of these would help a lot.