To what elements/forces do each of the senshis' powers correspond to in their attacks?
So far I have the following:
Saturn: Earth (In the more primordial sense)
Pluto: Time and Space
I'm basing this not only on the Silver Crystal, but also on the basis of their respective attacks. Halation would be the "Breath of Life" (which can be used to exorcise demonic beings), and the various heart attacks are either an infusion of love which would be experienced as a form of Hell by the various daimons they fight, or in a more literal sense, Usagi tears their hearts apart with her attacks.
This just leaves Mamoru.
Mamoru's powers seem to be connected to healing, sentience, and reason (ie. Cosmic man).