One question that exists right now that I don't have an easy way to answer is "which skills do I have left to unlock?"
There are a couple of ways to find out (go to the every-non-elite trainer in the Ring of Fire, which by the way is awesome, or go to a Priest of Balthazar), but I'd like to see the greyed out skills when I bring up the skill list for my character.
I believe PvP characters have something like this- at least at character generation, where you can see every skill for your classes, and whether or not its unlocked. Since I do all my skill unlocking with my PvE characters, I'd like to have that option there- perhaps as a checkbox "Show all Skills?" on the skill menu.
Skill Collection Check List
Willow
EternalTempest
I like that idea, show all your skills in the list but show skill you don't have yet greyed out and have a lock symbol to ones you never had (that way on 2nd, 3rd, etc charcter you can see that you don't have but it's been unlocked).
MoldyRiceFrenzy
i like idea