I don't know if this counts as a Jagged Earth wishlist item, or just something to be included in future reprints:
Some Powers (Elemental Boon comes to mind), and some Spirits (Bringer of Dreams and Nightmares, for example) give other Spirits extra Elements for use in meeting elemental threshholds. Particular in complicated games, or when cards/Powers get duplicated, it is difficult to keep track of what additional elements have been given out. The spirit tokens -- being just one color -- didn't really work for that purpose. For my own games, I made a set of element tokens -- just printed out a couple of sets of elements on a piece of cardstock and laminated it -- and found those extremely useful to keep track of which additional elements had been given out and which could not be found on cards/boards.
Anyway, either as part of the expansion, or just in future printings of the game, this seems like a helpful thing that could be included. Anybody else out there have different ways of keeping track of elements?