[...] To Luthien's point about "bringing in" number correspondences or other ideas from belief systems outside of the Legendarium, I would say this; my adopting the Legendarium as my personal mythos does not require that I forget or ignore other belief systems with which I might draw comparisons. As best I can tell my making a reference to Wicca, for example, does not indicate I intend to 'bring it into' my current practices any more than mentioning my Judeo/ Christian background means I intend to practice some hybrid form of Tolkienesque Christianity! My original question was asking how the Legendarium compared to systems that used 4 elements in ritual. In fact I will likely modify my rituals to reflect the information Ellenar provided. Of course that is MY decision alone.
I don't think that Luthien intended any offense with her statement. If I may hazard a guess (as we speak of these issues frequently) it is more that many neopagans seem to assume that their worldview and '
schema-set' is universally shared by anyone who is not on the Fundy Christian track. But some of us come from a more scientific/agnostic or even atheistic worldview, and thus may never even have heard of such things as "the four classical elements" (well, five if you include aether as many do). It isn't that we are
offended by their mention, but the effect is probably similar to what would happen if you asked the average man on the street what significance he attaches to congruence subgroups in the Hurwitz quaternion order,
vis a vis Riemann surface theory and systolic geometry.
Most likely, you'd get a "WTF?!!!" reaction.

The only reason that I can bandy terms like 'Aether' and 'Enochian Calls' and so forth around is that I have an amateur interest in anthropology, and so when I first encountered the (to me, intending
no offense) alien culture of neopaganism some 5 years ago, I wanted to at least learn enough to understand the lingo, even if the informational content did not interest me greatly (aside from shamanism, which I already had exposure to via my anthropological interests). But, some people may be more interested in looking at the Legendarium from the "inside out" rather than through a pre-existing external 'lens', whether that be one of neopaganism or one of reductionism (such as many of the Tolkienian linguistic and literary groups use).
Anyway, Luthien can speak for herself, I just wanted to provide a little background.
///Dave
{Edited a bit later to remove some small typos, yo.
}