It's you decision in the end. Me, I'm fine without bing an "hardcore player". I just play for fun …
And yes, I have already used the Gem Of Many Facets with several items - the Archivar's Set, however, doesn't quite work when there is something that exeeds the bonus of 20 spell points or what it was. I only vaguely remember that I had its bonus icon long ago, and it vanished as soon as another item provided my Wizard with more than 20 spell points.
I have, however, the icons of "Anger's Wrath" and the "Problem Solver" visible.
And thanks for the "exotic weapons" explanation. I guess it would be perfect for my Artificer.
Which I'll try to level up a bit more today and tomorrow.
And I must not forget to get my Guild Renown Elixir …
But I'm totally exhausted today … This was a long and workful day …