I went through all the formulas for the new crystals. Seems most of them do the same thing as current spells or scrolls - damage converters, resistances, wards. As they will be much harder to make in bulk as they require looted crystal slivers, which by the way do not drop very well, I would think their numbers should be much higher. A tier 5 spirit resistance spell gives +128, spirit ward gives +220. A tier 6 crystal gives +130 to each. Not enough of a difference, in my opinion, to warrant hunting for tier 6 slivers and carrying around a bunch of different crystals to use. I believe the school has a lot of possibilities, but as scrolls and spells are so much easier to make, I would like to see the numbers bumped up for the crystal buffs.
It would also be quite helpful I think, if whoever the vendor ends up being that sells the abilities, would have some dialogue explaining how to use them. It took me a bit to realize they were actual abilities and needed to be hotkeyed to use instead of buying stacks of the abilities.
Thaalia of Order